The Ultimate Guide to Zettelkasten Index Card Storage

Invariably, when one is starting out on their analog zettelkasten or index-card based commonplace book journey, one of the first questions besides what size and type of cards should I use, is naturally what sort of box should I put them in? This is one of the more frequently asked questions I’ve seen of those who have detailed their systems or especially in online fora.

Generally until you’ve made the commitment to keep up at it beyond a few hundred cards, a simple cardboard box, shoebox, or something sitting around the house will generally do. If a simple box worked so well for Vladimir Nabokov‘s work, surely you might do as well? Eventually you might want to move to something larger or more permanent, or at least something that looks nice on your desk or tucked into a corner. Those who, like Niklas Luhmann, Gotthard Deutsch, Gershom Scholem, Roland Barthe, S.D. Goitein or many others, are in it for the long haul and may need storage for more than 10,000 – 100,000+ cards might prefer something larger and more permanent, or at least something modular that might grow with their collection over time.

Whatever your choices, budget, and ultimate path, it might help to have a list of some of the more common options available to take a look at to see what might work for you now or in the future so you can begin thinking (or if you’re smitten: dreaming) about what your ultimate path might might be. Hopefully this guide will be helpful in that endeavor.

While storage for 3 x 5 inch and 4 x 6 inch index cards are the most ubiquitous and easy to find (with there being a fairly larger market for 3 x 5 inch card storage), one can find larger cards (5 x 8, 6 x 9, etc.) and storage boxes for them, they just may take more searching or cost a bit more. One should keep in mind that the larger the card and box, the harder and more expensive sourcing them will usually become. Your home country may also play a factor in your card size and box choices. I generally wouldn’t recommend that those in the United States opt for the European standards like A4, A5, or A6 cards as they’re slightly harder to source here and there aren’t nearly as many options for the range of storage options unless you’re willing to buy and ship cabinetry from overseas which can become expensive for the more budget conscious. A similar caveat should be noted for those in other countries looking at the standards in the United States. One of the greatest benefits of the A size standard is that larger slips can be folded in half to create the next smaller size down, so for example you could use A4 slips, but fold them in half and have them fit very neatly into your A5 standard box.

Your personal working needs may also play a factor in your choice. Nabokov, mentioned above, may have opted for simple shoebox like boxes because he preferred to be able to work easily on the move. However as seen in the example in Robert Pirsig’s book Lila: An Enquiry into Morals, you might also want to guard against your box tipping over and spilling all over your room. This incidentally is the purpose of the holes in library card catalog cards which are held into their drawers by long metal rods. One should keep in mind that death by zettelkasten as seen in Anatole France’s book L’Île Des Pingouins (1908) is rare, but given the vending machine size and weight of some of the larger index card filing cabinets below, one might consider some care. 

My personal preference has been for the 4 x 6 inch form factor, so most of the suggestions below are geared toward that size, though in many cases options for 3 x 5 inch cards are all readily, if not more readily, available. Card storage for larger form factors may not be as readily available for more modern options, but with a little bit of looking, perhaps you’ll find something functional and within your budgetary range. I have definitely seen some lovely storage options for larger cards.

Of course if you go all-in on a gorgeous restored wooden card filing cabinet for something in the $5,000+ range that you intend to use for the next 50 years, the $100/year storage cost over time may seem like a drop in the bucket for something that will help to develop and expand your knowledge and creativity. When you compare this to computers in the $500 – $2,000 range, it’s really not so bad, particularly when you realize that these won’t need replacements or upgrades over time the way your computer might. They also don’t come with the recurring costs for data storage, back up, or software subscriptions that digital zettelkasten methods entail.

One of the few caveats in purchasing a box for your cards is to make sure that they’ll actually fit. While many boxes may advertise that they’re for a specific size and usually those will fit, you may actually want them to be slightly larger. For example, a box may fit your 4 x 6 inch slips, but will it also accommodate the tabbed index cards you use to help organize them? As a result you may actually want something that will accommodate 4.5 – 4.75 inches in height instead of just 4 inches. If you’re shopping for boxes in person, it may behoove you to carry around an index card or two or even a tabbed card to make sure your potential new box will work for you.

DIY and Makeshift Boxes

As I recommended above, your best bet on a first box is something that you have on hand, can upcycle, or that you can make for yourself in DIY fashion. Cardboard boxes, shoeboxes, or even custom cut and glued/taped cardboard can serve as a useful and functional zettelkasten box. One practitioner I’ve encountered swears by her upcycled Sam Edelman shoeboxes which are incredibly sturdy and colorfully handsome boxes which others might spend upwards of $40 on otherwise. Some recycled cardboard and duct tape can give you a custom-sized box for pennies on the dollar and fit anywhere from 500 – 2,000 cards pretty easily.

If you want to go crazy you can decorate your box with stickers, construction paper, or even wrap it with fabric or contact or shelf paper with a variety of patterns and designs. Because they’re cheap, you may as well spend a few dollars and minutes decorating and making your box something you enjoy working with for the coming weeks and months.

Modern Boxes

Before exploring boxes made specifically for index cards, keep in mind that there are some vendors who make boxes for other purposes, but which will easily accommodate your index cards as well.

Recipe boxes

While these tend to be relatively small and only hold somewhere from 200 – 1000 cards, they can be excellent starter boxes that allow some portability and more style options than many of the other options on the market. You can easily find these sorts of recipe boxes in online stores like Amazon and Etsy in a variety of styles, colors, and materials (wood, plastic, metal, etc.) A wide variety of these should be easy to find in the $10 – $100 range from such a wide variety of vendors and suppliers that I won’t bother to mention them.

My first box was a small tin, green box that I’m reasonably sure was from the Martha Stewart collection from Macy’s that I repurposed until it outgrew its 300 card capacity.

photo of desk featuring a green index card with a fountain pen on top of it. Surrounding it are a book on a book stand, a green card index and a pair of glasses

Microfiche boxes

Library supplies company Brodart has a selection of potential boxes including Microfiche boxes. These should easily fit 4 x 6″ index cards as well as card dividers with taller tabs which commercially don’t often get taller than 4 1/2″. See also their microfiche divider guides which might be used for sectioning one’s work.

Postcard boxes

Brodart and some other art and photo supply manufacturers make boxes for postcards or photos. (N.B. presuming the 4 1/8″ H dimension of Brodart’s postcard box is even the outer dimension, this means that one can’t easily keep tab cut dividers which often go from 4 3/8″ to 4 1/2″ tall in these boxes with the lids on properly.)

Another subtle difference between Brodart’s postcard and microfiche boxes is that the smaller postcard box is 60-pt paper versus 40-pt for the larger microfiche box, which means that while sturdy, isn’t quite as sturdy. A side benefit in addition to their stackability is that they’re designed for archival storage purposes which may help in long term storage of your collection.

Other options:

Photo boxes

While they’re no longer available, Ryan Holiday has previously indicated in many places that he prefers and uses Cropper Hopper plastic photo boxes to keep his index card-based commonplace book. Though those aren’t around anymore, there are certainly others that will fit the bill well since 4 x 6 inch standard photo size are the same size as many index cards. And of course, if you’ve got a favorite index card or two, why not buy a photo frame to feature it on your desk?

Decorative boxes

Kuggis is a generic, but fashionable IKEA box with a lid that can be used for card storage. At 7 x 10.25 x 6 inches its a nice size and just about the perfect size for 4 x 6″ index cards. The lid has a slight indent to make it easily stackable. At $5.99 its a nice budget-conscious option.

Surely there are a wide variety of other decorative boxes one might find with a bit of looking. The downside may be that while these might look nice on a desk, they’re less likely to be high capacity, modular, or able to grow beyond a certain point.

a white wooden crate with rope handles at each end and a red placard on the side that reads "Joy" with the "o" replaced with a snowflake.
I recently saw a simple decorative holiday box from Kohl’s that could be repurposed into a holiday themed zettelkasten. Does your zettelkasten bring you this kind of “joy”?

Universal Storage Boxes

There are a number of available mass manufactured boxes made for a variety of general use purposes which can be used for zettelkasten containers. Some of these include:

Room Essentials™ 6qt Clear Storage Box White, a clear plastic box with a white lid whose interior measurements are 11 1/2″ x 6 3/8″ x 4 3/8″ and retails for $1.50. These are billed as nested/stackable as well. (Example in use

Sterilite 1751 – 6 Qt. ClearView Latch™ Box, a clear plastic box with handles whose interior measurements are 11 5/8″ x 6 1/8″ x 4 5/8″ and retails for $3.89 at vendors like Target, Home Depot, TruValue, and Big Lots. (Example in use)

Boxes made specifically for index cards

For the more serious zettler, one may prefer to have boxes which are custom made for storing index cards. These usually have some nice refinements for daily use, are more rugged, and come in a variety of colors and styles and are generally meant for easy use in a desk drawer, on one’s desktop, or for easy storage on office shelves. As a result, they’re also generally a bit more expensive than their non-custom brethren.

Acrimet makes a number of box sizes (3 x 5, 4 x 6, 5 x 8, and 6 x 9) and a variety of colors in metal with plastic lids. They all hold approximately 600 index cards and range from $28.00 – 45.00 depending on the card size they’re meant for. While these are quite beautiful on a desk, their hinged lids don’t lend them to easy stackable accessibility if you have a larger collection. This is what I personally used after making the step up from a recipe box, though I opted for purchasing a few additional plastic dividers for $4.20 each 

A small metal zettelkasten with a clear plastic lid sitting on a wooden table with a fountain pen and index card in front of it

コレクト (Collect, or sometimes translated as Correct) MDF boxes from Japan, $40 and up holds approximately 1,000 cards. The dimensions for these are usually given in centimeters, and so are more likely to be found for DIN sized cards (A6 or A7). These were the boxes used by Hawk Sugano who used a Correct Indexcard Dock (C-153DF) box for some of his 3×5″ index card “Pile of Index Cards” practice.

Globe-Weis/Pendaflex Fiberboard Index Card Storage Box, $20 – $25, holds up to 1,000 cards. These are the boxes used by writer Robert Green to write his books. When they were originally manufactured by Weis, these were also the boxes used by the Rev. Dr. Martin Luther King, Jr. while he was studying for his doctorate at Boston University. They’re made of some sturdy archival quality cardboard and their simple structure makes them fairly large and easy to stack. 

Snap-N-Store Index Card holder is a collapsible box fits that will fit 1,100 4 x 6 cards for $10 – $15.

Max Gear business card/index card boxes are made of bamboo and will hold up to 600 cards for about $40.00. 

JUNDUN index card holder can contain 1,200 cards, comes in 3 x 5 and 4 x 6 options with several available colors from $18 – $30. While being portable, these are also lockable and fireproof. 

Steelmaster card files manufactured by MMF Industries are one of the more industrial/serious options in this category. Their 263644BLA Index Card File Holds 400 4 x 6 cards with dimensions of 6 3/4 x 4 1/5 x 5 inches. $80- $100.

Library Charging Trays

These boxes were originally intended for use in libraries to help librarians keep physical track of the books which were out on loan. Because the 3 x 5″ index cards used in the pockets of library books were primarily used in portrait orientation instead of landscape, these boxes are meant to accommodate that specific size and orientation. These might be an interesting choice if you use a non-standard card orientation or perhaps if you’re recreating the old Memindex card productivity system. A few manufacturers like Brodart still make them or they might be found on the used market as libraries continue computerizing. You’re exceptionally unlikely to find them for larger card sizes. I’ve seen them in 1 to 5 tray styles in a variety of lengths and colors and some even with lids. Used versions of Remington-Rand and Gaylord Brothers versions can be found used online (eBay often has them), but they’re usually misidentified as drawers and very rarely identified as library card charging trays.

Update [2023-11-30]: I’ve written a bit more about these boxes and provided photos of a couple I’ve collected for those interested in more information about them.

Side view of a three row charging tray with index cards sitting in it.

 

Brodart Full-Length Single Charging Tray Intended for desktop use, it holds 1,000 5″H x 3″W cards, has an adjustable steel follower block with automatic lock, and felt pads on tray bottom to protect your desktop.

Brodart Mini Single Charging Tray holds 600 5″H x 3″W cards, adjustable steel follower block with automatic lock, felt pads on tray bottom 

Modular and Industrial options

For the more serious long term zettelers who have rapidly growing collections, there are some options for modular systems that will allow you to easily add additional boxes over time.

Vaultz 2 drawer card file both with/without locks, $69. These are the type used by many in the zettelkasten space including Scott Scheper.

Steelmaster by MMF Industries, mentioned above in a smaller form factor, also manufactures a two drawer modular card cabinet that holds up to 3,000 cards. Their model MMF263F4616DBLA runs in the $75-100 range. If you’re interested in these, they seem to be becoming harder to find, so you may wish to purchase a few up front in case they are discontinued in the coming years, which seems to be the general case for these sturdier metal filing boxes over the past several decades.

Office furniture manufacturer Bisley has a relatively wide variety of small modular boxes in a variety of form factors and vibrant colors. Some of these aren’t as readily sourced in the United States, but can be ordered from their New York offices. They are not only meant to be stackable, but have options for locking them as well. 

Tennsco is one of the few remaining index card filing cabinet manufacturers left in the United States. They make significantly larger cabinets with a variety of sizes, numbers of drawers and colors. Amazon carries a variety of them as does the aptly named Metal Cabinet Store. For purchasing new card filing cabinets that can hold tens of thousands of cards, this seems to be the only stop. Depending on type, number of drawers, and your particular card size these can range from $1,800 – $2,300 and will store up to 43,400 index cards. On the positive side with such high capacities, two of them will likely to take you a lifetime to fill. I’ve not seen exact specifications for these, but I suspect they’re made of slightly lighter 18 gauge alloy steel which makes them fairly sturdy while still being only about 220 pounds. They’re not quite as industrial as the 20 gauge steel filing cabinets made in the mid-1900s which can much stronger as well as much heavier.

FireKing Card, Check & Note File Cabinet, 6 Drawers (6-2552-C) FireKing International manufactures a 1-hour fire protection filing cabinet with index card inserts, that has options for various locks, is rated for 30 foot drops, and is sealed against potential water damage. They offer both four and six drawer options with the larger clocking in at a massive 863 pounds. With each of the 18 sections on the 6 drawer model capable of 25 15/16″ of storage, this beast should hold about 64,800 index cards. The rough news is that this king of cabinets, while providing great protection and security for your zettelkasten, runs a fairly steep $6,218.00 and up which makes it one of the more expensive options out there. Despite the initial sticker shock though, keep in mind that it should provide a lifetime of secure and worry-free storage for just under 10 cents per card.  

Brodart libary card catalogs. Brodart is one of the few companies still manufacturing library card catalogs, and they’re doing so in a modular way so that you have a bit more selection about how big your filing cabinet is and how it’s configured. Generally you can choose a table base or not, how many sections of drawers you purchase, whether or not it includes writing board sections (for having writing surfaces for quick note taking in front of it), as well as the ability to remove the top and add new sections. The down side here is that they only make them in the 3 x 5 inch form factor. I’ve previously written about them and some of their available supplies in detail in the past here: Brodart Library Supplies for the Analog Zettelkasten Enthusiast.

Vintage Boxes

Commercial demand for card index files has waned dramatically since the advent of commercial computing. Fortunately they were so tremendously ubiquitous from the late 1800s through the mid-to-late 1900s, they can readily be found in acceptable to excellent used condition, and sometimes even in restored condition for a reasonable sum in comparison to purchasing new filing cabinets. Because the market for people looking for these used boxes and filing cabinets is so thin they’re not terribly expensive. The one caveat to this seems to be for larger restored/refinished wooden library card catalogs from the early 1900s in part because they are stunning pieces of nostalgic furniture and can still function as curiosity cabinets or high end wine storage cabinets.

These cabinets can be searched for at specialty office liquidation companies, surplus government/school/library companies, auctions, and vintage and antique stores. However, some of the quickest places to find these on the less expensive side can be your local Craigslist furniture listings, E-bay, Etsy, Facebook Marketplace, Offerup.com, and even Nextdoor.com. I recommend looking around at all of these venues for the variety of what’s available versus your particular style, taste, and budget level. Looking and waiting can be particularly useful if you’re budget conscious, but I’d also advise that once you know what you want and have fallen in love with something, buy it immediately as you may not come across a particular piece again.

A wooden 12 drawer index card filing cabinet (or zettelkasten) sitting in an antique store.
I ran across this 12 drawer 4 x 6 inch index card filing cabinet at an antique store in Southern California in December 2022.

Because some of these cabinets are so large and the demand is so low, many sellers may be motivated to offload them for much less than they list them for. I purchased my own Singer Industrial cabinet for $200.00 and another a refurbished Steelcase 8 drawer cabinet for $125 while I’ve seen similar ones listed online (and unsold for long periods of time) for over $1,000.

Sellers of refinished pieces are much less likely to drop their prices for obvious reasons.

Another factor to consider in purchasing larger cabinets is that in the 200+ pound range, these can be harder to package and ship and may require freight or furniture shipping methods. As a result, shipping can easily cost as much as the piece itself, so when shopping, keep this in mind. If you’re more budget conscious, narrow your search to local sellers which may make pick-up or shipping significantly cheaper. An additional weight factor to keep in mind is placement of the cabinet(s) and structural support. With my own Steelcase 8 drawer cabinet weighing in at about 240 pounds and a capacity of 61,000 index cards which would have an approximate weight of 255 pounds, the total comes to almost 500 pounds. If you ultimately have a few of these, the load can be significant on home grade construction. I keep mine in a corner of the house which has a slab concrete support because I’ve previously had the experience of a large tanker desk creating a 3/4 inch sinking of the floor underneath it (measured at the baseboard moulding) over the span of about 5 years.

Once you’ve gotten something, keep in mind that the original wear and tear and potential patina of a piece can be part of the allure and nostalgia. Sadly, second and third hand owners may not realize the functionality of some pieces of these files and as a result they may be missing some hardware like card rods, following blocks, locks, or other pieces which may be hard if not impossible to find or replace. 

If you’re inclined, you can either send them out for refinishing or refinish them yourself. Some of the larger metal pieces can run from $500 – $1,500 to bead blast and re-paint or re-enamel, but have the benefit that you can choose which color(s) you’d like them to be to fit into your decor. You may have to search around to find refinishing shops for these, but you might also find that your local auto-repair firm is well set up for stripping, priming, and repainting these as well (some of them are almost as large as a car, but without wheels and engines.) 

Wood

Cabinets in the late 1800s and early 1900s were primarily manufactured out of wood. Some midcentury and later cabinets mixed wood with steel drawers or in the late century wood cabinets with plastic drawers inside mounted to wooden fronts. Many were made with quarter sawn oak or with “tiger oak”, which can often be a useful key search term for finding them. Sometimes it can also be useful to search for the key phrase “apothecary cabinet” as many who have these either don’t understand the difference or add it to increase their search exposure for potential buyers who seemingly no longer desire to store large quantities of index cards. Another useful search phrase is midcentury modern (or the abbreviation MCM) especially if you like that particular esthetic. 

While a number of manufacturers focused on the library card catalog space with catalogs containing 10-30 or more drawers almost exclusively for the 3 x 5 inch index card, many also made file card furniture for business use and these can usually be found with 1-10 drawers in size. Possibly most common are the two drawer files which can often be stacked in a modular way to allow for growth of one’s desktop system. In these areas it is more common to find 3 x 5 inch and 4 x 6 inch form factors, but often larger card sized furniture was built and distributed, though these are rarer on the second hand market.

Oblique angle on a Shaw-Walker 11 inch 3 x 5 inch card index
An 11 inch Shaw-Walker wooden card index that I picked up for $10.

With some searching, one can also find combination cabinets that have drawers not only for index cards, but also contain standard hanging file drawers for 8.5 x 11 inch files and paper filing purposes. These sorts are particularly more common in the very early 1900’s as modular systems which were focused on the business market.

A two drawer wooden card index sitting on a wooden table

Some of the more common manufacturers for wood card catalog files include: 

  • Library Bureau (Ilion, NY) (1876), Sometimes listed as “Library Bureau Sole Makers”
  • Yawman & Erbe 
  • Globe-Wernicke
  • Gaylord Bros. Inc. (Syracuse, NY and Stockton, CA) (1896)
  • Remington Rand
  • Weis (Monroe, Michigan)
  • Wagemaker
  • Tucker File & Cabinet Co. (Ilion, NY)
  • The Fred Macey Company, Ltd. (Grand Rapids, Michigan), later renamed Macey-Wernicke Co. Ltd., and again as The Macey Co. 

A light brown Macey Co. oak card index with 16 drawers sits between a black and gray Steelcase card index and an oak barrister bookcase.

Update: In September 2023, I’ve written more detail about the state of the used Library Card Catalog market, for those who might be interested in going that route for 3 x 5″ index cards: Market analysis of library card catalogs in 2023.

A waist high Gaylord Bros. library card catalog with a smaller desktop card index and black Smith-Corona Clipper typewriter on top.

Another option on the secondary market are used library charging trays, but it’s rare that sellers know what these were called or how they were used, so searching for and finding them can be difficult at best. Most often sellers confuse these with card catalog drawers or tray inserts. Additionally searching for charging trays directly results in modern accessories for charging cell phones and other personal electronic devices. Because they’re difficult to search, there’s a greater than necessary implied rarity to them, and as a result, they can be listed for several hundreds of dollars though most often they sell in the range of $5-15 per row of cards in the tray and are frequently found in configurations of one, two, three, and sometimes up to five rows of cards in a single unit.

Library charging tray with two rows for storing 3 x 5" index cards in portrait orientation. It's sitting on a small library card catalog.
A two row charging tray sitting on top of a library card catalog.

In addition to the more standard run-of-the-mill card files in single or multi-box form, you might also find some rarer combination furniture like the Satelite Combination Card Index Cabinet and Telephone Stand (circa 1906), though something like this could also be used as a semi-portable or movable piece of furniture that one could place as a small writing surface next to their favorite reading chair to write and file notes away on a leisurely evening.

1906 Advertisement for a combination card index table and telephone stand featuring a desk with the satellite combination table next to it.
1906 magazine ad from the Adjustable Table Company

Steel

As the 20th century progressed, many manufacturers switched from wood to steel as their material of choice. Most library card catalogs continued to be made of wood though a few can be found in steel. The larger proportion of steel filing cabinets cabinets were manufactured by companies that also manufactured desks and other industrial use filing cabinets. 

Again, here desktop two drawer modular/stackable cabinets abound though 8 – 10 drawer and even larger free-standing filing cabinets can be found. Many of these include tab and slot features to lock them together for safer stacking. A good example of a modularly built collection can be seen in this photo from a 2017 New York Times article of Joan Rivers’ collection of index cards with 36 drawers of 4-by-6-inch index cards containing jokes she’d accumulated over her lifetime of work. 

Credit: Hiroko Masuike/The New York Times

Somewhat rarer, but findable, one may encounter filing cabinets meant for Hollerinth or punch cards which eventually standardized at 3.25 x 7.375 inches, which was also the standard size for paper currency of 1862–1923. Often these will have drawers high enough to accommodate 4 x 6 inch cards, but one should double check this prior to purchase.

Some of the more common steel cabinet makers include:

  • Yawman & Erbe 
  • All-Steel Equipment, Inc. (ASE) (Aurora, Illinois) 
  • Steelmaster (Art Steel Co., Inc.) (New York)
  • Browne-Morse (Muskegon, Michigan)
  • Cole-Steel Equipment Company (New York) 
  • Singer Business Furniture
  • Globe-Wernicke
  • Buddy (later Sandusky/Buddy)
    • They seem to have ceased manufacturing them some time around 2016
  • MMF Industries
  • GWS

The smaller 1 to 3 drawer vintage metal card files are readily available on a variety of online shopping sites usually between $15 and $40. This isn’t bad given how expensive new files can run. Many were made with small fittings that allow them to be stackable. Usually these are sturdy, but light enough for relatively inexpensive shipping. If they’re in bad shape, they can usually be easily cleaned up and primed and repainted in more modern colors to suit your taste and style. 

The larger multi-drawer full cabinets can often run from $200 to over $1,000, but their bigger issue is that they’re so large and heavy that they can be in the range of $800 or more to ship anywhere. If you want something like this, your best bet is to try to find something local that you can drive to and pick up locally.

If you’re into 4 x 6 inch cards, double check with the seller to make sure that they’ll fit as most sellers won’t list the card sizes for drawers since they don’t expect them to actually still be used as card indexes and they’ll neglect to not additional clearances for tabbed cards. Keep in mind that often even the somewhat larger cabinets are a 1/4″ too short for 4 x 6 inch cards, much less the slightly taller tabbed cards (A-Z) you might use for separating sections. 

A while back I personally picked up a large Singer Business Furniture card index and a refurbished Steelcase 8 drawer cabinet which I’ve written a fair bit about. Some of the information there may help to provide some more context about these larger cabinets.

Fully assembled Steelcase card index filing cabinet next to a bookcase

Custom made

Of course given all this selection, you still may not have found the right box for your taste or your working style. In this case you may want to have something custom made. Given this, however, it may still behoove you and your designer to be aware of what has existed in the past when designing something specific for your needs. 

Some common features you might find useful in either designing or choosing your own cabinets include:

  • follow blocks to bunch cards to the front of the drawer and hold them upright or at a slight angle without falling over;
  • bail stops, a mechanism to keep the drawer from being accidentally pulled completely out of the case and dropping your cards everywhere;
  • card rods as often seen in library card catalogs which insert from the front to the back of the bottom of drawers to prevent accidental card spillage.

I don’t have many examples of custom made set ups, but I’ll add links to what I find below and some individuals may add others in the comments section below as well.

Examples

Been working on this Zettlekasten for my thesis for nearly a year… Made some personal modifications to the system, so it includes a chronological stack of cards and lots of images.
by inantinet

In late 2022/early 2023, Scott Scheper commissioned a two drawer solid wood (cedar) desktop zettelkasten box similar to those from the early 20th century. He had it listed on his website initially for $995 and then later for a reduced price of $495. He created a waitlist sign up for copies like it, ostensibly to test the interest in  manufacturing/selling them as a product. To my knowledge he never made any beyond the initial prototype, but it does show that one could custom make their own if they prefer.

Foreign Made Zettelkasten

Particularly missing from this collection is a wide array of European standard furniture and boxes for A4, A5, A6 etc. cards. There are some great German, Russian, and other cultural design specific pieces I’ve not included, in part because they’re not as readily available in my market and I haven’t yet had the time to delve into their histories. If you’ve got experience here, I’d love to hear what’s available.

Anecdotally, I’ve heard that the IKEA Moppe will work for A7 cards. Additionally, I’ve heard that some Chinese practitioners have used Taobao cabinets.

Others?

In addition to the A-standard types mentioned above, surely I’ve missed some boxes and cabinets along the way, though this may be one of the more complete collections of boxes I’ve seen compiled. If I’ve missed any that should be included, or you have an example (your own perhaps?) that I can feature or link to, please let me know in the comments or via a reply in social media. Particularly appreciated are examples of non-standard boxes in use as zettelkasten or custom made examples, particularly if they include photos and/or DIY instructions for construction.

Remember that you shouldn’t have to settle for your zettel… Happy zettel-casting!


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Over the past year and change, I’ve read and written a fair amount about note taking practices and their history including the topics of #CommonplaceBooks and . I’ve spent a few minutes aggregating it into a collection for those who are curious: https://boffosocko.com/research/zettelkasten-commonplace-books-and-note-taking-collection/. 🗃️📓🖋️
Replied to a post by Jim Luke (econproph) (@econproph@mastodon.social)Jim Luke (econproph) (@econproph@mastodon.social) (Mastodon)
@chrisaldrich Prob wouldn't work for your use since the paper stock, but Post-its come in 4x6 portrait (usu w/lined) gummed into a pad. Issue is post-its are usu lightweight stock - closer to 80#text (ordinary copier stock: 125gsm) and what we call cardstock is typically 65#card or thicker (175gsm+).
@econproph Thanks! It’s not only the thickness, but also the fact that they stick together front to back. I have used these in the past like a faux-whiteboard on walls, which is great by the way, and then stuck them to index cards for filing/later use, but for day to day use the sticky backs is an additional fiddly bit that’s probably worse than the stock issue.
Replied to Commonplace Book, a Verb or a Noun? by Aaron DavisAaron Davis (Read Write Respond)
Whenever I read about the various ideas, I feel like I do not necessarily belong. Thinking about my practice, I never quite feel that it is deliberate enough.
Sometimes the root question is “what to I want to do this for?” Having an underlying reason can be hugely motivating.

Are you collecting examples of things for students? (seeing examples can be incredibly powerful, especially for defining spaces) for yourself? Are you using them for exploring a particular space? To clarify your thinking/thought process? To think more critically? To write an article, blog, or book? To make videos or other content?

Your own website is a version of many of these things in itself. You read, you collect, you write, you interlink ideas and expand on them. You’re doing it much more naturally than you think.

I find that having an idea of the broader space, what various practices look like, and use cases for them provides me a lot more flexibility for what may work or not work for my particular use case. I can then pick and choose for what suits me best, knowing that I don’t have to spend as much time and effort experimenting to invent a system from scratch but can evolve something pre-existing to suit my current needs best.

It’s like learning to cook. There are thousands of methods (not even counting cuisine specific portions) for cooking a variety of meals. Knowing what these are and their outcomes can be incredibly helpful for creatively coming up with new meals. By analogy students are often only learning to heat water to boil an egg, but with some additional techniques they can bake complicated French pâtissier. Often if you know a handful of cooking methods you can go much further and farther using combinations of techniques and ingredients.

What I’m looking for in the reading, note taking, and creation space is a baseline version of Peter Hertzmann’s 50 Ways to Cook a Carrot combined with Michael Ruhlman’s Ratio: The Simple Codes Behind the Craft of Everyday Cooking. Generally cooking is seen as an overly complex and difficult topic, something that is emphasized on most aspirational cooking shows. But cooking schools break the material down into small pieces which makes the processes much easier and more broadly applicable. Once you’ve got these building blocks mastered, you can be much more creative with what you can create.

How can we combine these small building blocks of reading and note taking practices for students in the 4th – 8th grades so that they can begin to leverage them in high school and certainly by college? Is there a way to frame them within teaching rhetoric and critical thinking to improve not only learning outcomes, but to improve lifelong learning and thinking?

Victor Margolin’s zettelkasten process for note taking and writing

It’s not as refined or as compartmentalized as Niklas Luhmann’s process, but art historian Victor Margolin broadly outlines his note taking and writing process in reasonable detail in this excellent three minute video. (This may be one of the shortest and best produced encapsulations of these reading/note taking/writing methods I’ve ever seen.)

Though he indicates it was a “process [he] developed”, it is broadly similar to that of the influential “historical method” laid out by Ernst Bernheim and later Seignobos/Langlois in the late 1800s.


Victor Margolin’s note taking and writing process

  • Collecting materials and bibliographies in files based on categories (for chapters)
  • Reads material, excerpts/note making on 5 x 7″ note cards
    • Generally with a title (based on visual in video)
    • excerpts have page number references (much like literature notes, the refinement linking and outlining happens separately later in his mapping and writing processes)
    • filed in a box with tabbed index cards by chapter number with name
    • video indicates that he does write on both sides of cards breaking the usual rule to write only on one side
  • Uses large pad of newsprint (roughly 18″ x 24″ based on visualization) to map out each chapter in visual form using his cards in a non-linear way. Out of the diagrams and clusters he creates a linear narrative form.
  •  Tapes diagrams to wall
  •  Writes in text editor on computer as he references the index cards and the visual map.

I’ve developed a way of working to make this huge project of a world history of design manageable.
—Victor Margolin

Notice here that Victor Margolin doesn’t indicate that it was a process that he was taught, but rather “I’ve developed”. Of course he was likely taught or influenced on the method, particularly as a historian, and that what he really means to communicate is that this is how he’s evolved that process.

I begin with a large amount of information.
—Victor Margolin

 

As I begin to write a story begins to emerge because, in fact, I’ve already rehearsed this story in several different ways by getting the information for the cards, mapping it out and of course the writing is then the third way of telling the story the one that will ultimately result in the finished chapters.
—Victor Margolin

Hypothes.is as a Digital Zettelkasten for Neologism and Word Collection for Wordnik

A little while ago, one of the followers of my Hypothes.is account where I actively mark up my reading with highlights, annotations, and notes asked me why I was tagging seemingly random sentences with “wordnik” and other odd tags that started with “hw-“. Today I thought I’d write out the explanation of the habits around one of my side hobbies of word collecting.

Some background

In the book The Professor and the Madman: A Tale of Murder, Insanity, and the Making of the Oxford English Dictionary, Simon Winchester describes the pigeonhole and slip system that professor James Murray used to create the Oxford English Dictionary. The editors essentially put out a call to readers to note down interesting every day words they found in their reading along with examples sentences and references. They then collected these words alphabetically into pigeonholes and from here were able to collectively compile their magisterial dictionary.  Those who are fans of the various methods of knowledge collection and management represented by the index card-based commonplace book or the zettelkasten, will appreciate this scheme as a method of collectively finding and collating knowledge. It’s akin to Paul Otlet and Henri La Fontaine’s work on creating the Mundaneum, but focused  on the niche area of lexicography and historical linguistics.

Book cover of The Professor and the Madman featuring a sepia toned image of a seated professor in a full beard and a mustache holding a book.The Professor and the Madman is broadly the fascinating story of Dr. W. C. Minor, an insane asylum patient, who saw the call to collect words and sentences began a written correspondence with James Murray by sending in over ten thousand slips with words from his personal reading. 

Wordnik and Hypothes.is

A similar word collecting scheme is currently happening on the internet now, though perhaps with a bit more focus on interesting neologisms (and hopefully without me being cast as an insane asylum patient.) The lovely folks at the online dictionary Wordnik have been using the digital annotation tool Hypothes.is to collect examples of words as they happen in the wild. One can create a free account on the Hypothes.is service and quickly and easily begin collecting words for the effort by highlighting example sentences and tagging with “wordnik” and “hw-[InsertFoundWordHere]”.

So for example, this morning I was reading about the clever new animations in the language app Duolingo and came across a curious new word (at least to me): viseme.

To create accurate animations, we generate the speech, run it through our in-house speech recognition and pronunciation models, and get the timing for each word and phoneme (speech sound). Each sound is mapped onto a visual representation, or viseme, in a set we designed based on linguistic features.

So I clicked on my handy browser extension for Hypothes.is, highlighted the sentence with a bit of context, and tagged it with “wordnik” and “hw-viseme”. The “hw-” prefix ostensibly means “head word” which is how lexicographers refer to the words you see defined in dictionaries.

Then the fine folks at Wordnik are able to access the public annotations matching the tag Wordnik, and use Hypothes.is’ API to pull in the collections of new words for inclusion into their ever-growing corpus.

Since I’ve collected interesting new words and neologisms for ages anyway, this has been a quick and easy method of helping out other like minded word collectors along the way. In addition to the ability to help out others, a side benefit of the process is that the collected words are all publicly available for reading and using in daily life! You can not only find the public page for Wordnik words on Hypothes.is, but you can subscribe to it via RSS to see all the clever and interesting neologisms appearing in the English language as collected in real time! So if you’re the sort who enjoys touting new words at cocktail parties, a rabid cruciverbalist who refuses to be stumped by this week’s puzzle, or a budding lexicographer yourself, you’ve now got a fantastic new resource! I’ve found it to be far more entertaining and intriguing than any ten other word-of-the-day efforts I’ve seen in published or internet form.

If you like, there’s also a special Hypothes.is group you can apply to join to more easily aid in the effort. Want to know more about Wordnik and their mission, check out their informative Kickstarter page.

 

Some will think I’m in the pocket of , but I’m thinking it’s time to re-introduce to the scene. It will dramatically personalize learning while locking out the crowd.

Handwritten index card that reads: Some will think I'm in the pocket of #BigIndexCard, but I'm thinking it's time to re-introduce #IndexCards to the #EdTech scene. It will dramatically personalize learning while locking out the #SurveillanceCapitalism crowd.  #CriticalPedagogy #WissenschaftlichenArbeitens #zettelkasten

I’ve already been doing the work anyway, so I’ve updated my NaNoWriMo profile to reflect the research and writing work I’m doing on a book related to note taking and its historical traditions. I’m writing it using my commonplace book and Luhmann-esque zettelkasten as tools.

Thoughts on Zettelkasten numbering systems

I’ve seen variations of the beginner Zettelkasten question:

“What happens when you want to add a new note between notes 1/1 and 1/1a?”

asked at least a dozen times in the Reddit fora related to zettelkasten and note taking, on zettelkasten.de, or in other places across the web.

Dense Sets

From a mathematical perspective, these numbering or alpha-numeric systems are, by both intent and design, underpinned by the mathematical idea of dense sets. In the areas of topology and real analysis, one considers a set dense when one can choose a point as close as one likes to any other point. For both library cataloging systems and numbering schemes for ideas in Zettelkasten this means that you can always juxtapose one topic or idea in between any other two.

Part of the beauty of Melvil Dewey’s original Dewey Decimal System is that regardless of how many new topics and subtopics one wants to add to their system, one can always fit another new topic between existing ones ad infinitum.

Going back to the motivating question above, the equivalent question mathematically is “what number is between 0.11 and 0.111?” (Here we’ve converted the artificial “number” “a” to a 1 and removed the punctuation, which doesn’t create any issues and may help clarify the orderings a bit.) The answer is that there is an infinite number of numbers between these!

This is much more explicit by writing these numbers as:
0.110
0.111

Naturally 0.1101 is between them (along with an infinity of others), so one could start here as a means of inserting ideas this way if they liked. One either needs to count up sequentially (0, 1, 2, 3, …) or add additional place values.

Decimal numbering systems in practice

The problem most people face is that they’re not thinking of these numbers as decimals, but as natural numbers or integers (or broadly numbers without any decimal portions). Though of course in the realm of real numbers, numbers above 0 are dense as well, but require the use of their decimal portions to remain so.

The tough question is: what sorts of semantic meanings one might attach to their adding of additional place values or their alphabetical characters? This meaning can vary from person to person and system to system, so I won’t delve into it here.

One may find it useful to logically chunk these numbers into groups of three as is often done using commas, periods, slashes, dashes, spaces, or other punctuation. This doesn’t need to mean anything in particular, but may help to make one’s numbers more easily readable as well as usable for filing new ideas. Sometimes these indicators can be confusing in discussion, so if ever in doubt, simply remove them and the general principles mentioned here should still hold.

Depending on one’s note taking system, however, when putting cards into some semblance of a logical, sort-able order (perhaps within a folder for example), the system may choke on additional characters beyond the standard period to designate a decimal number. For example: within Obsidian, if you have a “zettelkasten” folder with lots of numbered and named files within it, you’ll want to give each number the maximum number of decimal places so that when doing an alphabetic sort within the folder, all of the numbered ideas are properly sorted. As an example if you give one file the name “0.510 Mathematics”, another “0.514 Topology” and a third “0.5141 Dense Sets” they may not sort properly unless you give the first two decimal expansions to the ten-thousands place at a minimum. If you changed them to “0.5100 Mathematics” and “0.5140 Topology, then you’re in good shape and the folder will alphabetically sort as you’d expect. Similarly some systems may or may not do well with including alphabetic characters mixed in with numbers.

If using chunked groups of three numbers, one might consider using the number 0.110.001 as the next level of idea between them and then continuing from there. This may help to spread some of the ideas out as surely one may have yet another idea to wedge in between 0.110.000 and 0.110.001?

One can naturally choose almost any any (decimal) number, so long as it is somewhat “near” the original behind which one places it. By going out further in the decimal expansion, one can always place any idea between two others and know that there will be a number that it can be given that will “work”.

Generally within numbers as we use them for mathematics, 0.100000001 is technically “closer” by distance measurement to 0.1 than 0.11, (and by quite a bit!), but somehow when using numbers for zettelkasten purposes, we tend to want to not consider them as decimals, as the Dewey Decimal System does. We also have the tendency to want to keep our numbers as short as possible when writing, so it seems more “natural” to follow 0.11 with 0.111, as it seems like we’re “counting up” rather than “counting down”.

Another subtlety that one sees in numbering systems is the proper or improper use of the whole numbers in front of the decimal portions. For example, in Niklas Luhmann’s system, he has a section of cards that start with 3.XXXX which are close to a section numbered 35.YYYY. This may seem a bit confusing, but he’s doing a bit of mental gymnastics to artificially keep his numbers smaller. What he really means is 3000.XXXX and 3500.YYYY respectively, he’s just truncating the extra zeros. Alternately in a fully “decimal system” one would write these as 0.3000.XXXX and 0.3500.YYYY, where we’ve added additional periods to the numbers to make them easier to read. Using our original example in an analog system, the user may have been using foreshortened indicators for their system and by writing 1/1a, they may have really meant something of the form 001.001/00a, but were making the number shorter in a logical manner (at least to them).

The close observer may have seen Scott Scheper adopt the slightly longer numbers in the thousands (like 3500.YYYY) as a means of remedying some of the numbering confusion many have when looking at Luhmann’s system.

Those who build their systems on top of existing ones like the Dewey Decimal Classification, or the Universal Decimal Classification may wish to keep those broad categories with three to four decimal places at the start and then add their own idea number underneath those levels.

As an example, we can use the numbering for Finsler geometry from the Dewey Decimal Classification wikipedia page shown as:

500 Natural sciences and mathematics
   510 Mathematics
      516 Geometry
         516.3 Analytic geometries
            516.37 Metric differential geometries
               516.375 Finsler geometry

So in our zettelkasten, we might add our first card on the topic of Finsler geometry as “516.375.001 Definition of Finsler geometry” and continue from there with some interesting theorems and proofs on those topics.

Don’t Waste Time on Complex Classification Systems

Of course, while this is something one can do doesn’t mean that one should do it. Going too far down the rabbit holes of “official” forms of classification this way can be a massive time wasting exercise as in most private systems, you’re never going to be comparing your individual ideas with the private zettelkasten of others and in practice the sort of standardizing work for classification this way is utterly useless. Beyond this, most personal zettelkasten are unique and idiosyncratic to the user, so for example, my math section labeled 510 may have a lot more overlap with history, anthropology, and sociology hiding within it compared with others who may have all of their mathematics hiding amidst their social sciences section starting with the number 300. One of the benefits of Luhmann’s ad hoc numbering scheme, at least for him, is that it allowed his system to be much more interdisciplinary than using a more complicated Dewey Decimal oriented system which may have dictated moving some of his systems theory work out of his politics area where it may have made more sense to him in addition to being more productive on a personal level.

Of course if you’re using the older sort of commonplacing zettelkasten system that was widely in use before Luhmann’s variation, then perhaps using a Dewey-based system may be helpful to you?

A Touch of History

As both a mathematician working in the early days of real analysis and a librarian, I wouldn’t be surprised if some of these loose ideas may have occurred tangentially to Gottfried Wilhelm Leibniz (1646 – 1716), though I’m currently unaware of any specific instances within his work. One must note, however, that some of the earliest work within library card catalogs as we know and use them today stemmed from 1770s Austria where governmental conscription needs overlapped with card cataloging systems (Krajewski, 2011). It’s here that the beginnings of these sorts of numbering systems begin to come into use well before Melvil Dewey’s later work which became much more broadly adopted.

The German “file number” (aktenzeichen) is a unique identification of a file, commonly used in their court system and predecessors as well as file numbers in public administration since at least 1934. We know Niklas Luhmann studied law at the University of Freiburg from 1946 to 1949, when he obtained a law degree, before beginning a career in Lüneburg’s public administration where he stayed in civil service until 1962. Given this fact, it’s very likely that Luhmann had in-depth experience with these sorts of file numbers as location identifiers for files and documents. As a result it’s reasonably likely that a simplified version of these were at least part of the inspiration for his own numbering system. [] []

Your own practice

At the end of the day, the numbering system you choose needs to work for you within the system you’re using (analog, digital, other). I would generally recommend against using someone else’s numbering system unless it completely makes sense to you and you’re able to quickly and simply add cards to your system with out the extra work and cognitive dissonance about what number you should give it. The more you simplify these small things, the easier and happier you’ll be with your set up in the end.

References

Krajewski, Markus. Paper Machines: About Cards & Catalogs, 1548-1929. Translated by Peter Krapp. History and Foundations of Information Science. MIT Press, 2011. https://mitpress.mit.edu/books/paper-machines.

Munkres, James R. Topology. 2nd ed. 1975. Reprint, Prentice-Hall, Inc., 1999.


Featured photo by Manson Yim on Unsplash

Death by Zettelkasten!!

Just in time for Halloween, a haunting story about information overload featuring the most deadly zettelkasten in literary history.

Coming soon to a theater near you…

In the preface to the novel Penguin Island (L’Île des Pingouins. Calmann-Lévy, 1908) by Nobel prize laureate Anatole France, a scholar is drowned by an avalanche of index cards which formed a gigantic whirlpool streaming out of his card index (Zettelkasten)!

Translation via:
France, Anatole. Penguin Island. Translated by Arthur William Evans. 8th ed. 1908. Reprint, New York, NY, USA: Dodd, Mead & Co., 1922. 

Small changes in the translation by me, comprising only adding the word “index” in front of the occurrences of card to better represent the historical idea of fiches used by scholars in the late 1800s and early 1900s, are indicated in brackets.

The walls of the study, the floor, and even the ceiling were loaded with overflowing bundles, paste board boxes swollen beyond measure, boxes in which were compressed an innumerable multitude of small [index] cards covered with writing. I beheld in admiration mingled with terror the cataracts of erudition that threatened to burst forth.
“Master,” said I in feeling tones, “I throw myself upon your kindness and your knowledge, both of which are inexhaustible. Would you consent to guide me in my arduous researches into the origins of Penguin art?”
“Sir,” answered the Master, /“I possess all art, you understand me, all art, on [index] cards classed alphabetically and in order of subjects. I consider it my duty to place at your disposal all that relates to the Penguins. Get on that ladder and take out that box you see above. You will find in it everything you require.”
I tremblingly obeyed. But scarcely had I opened the fatal box than some blue [index] cards escaped from it, and slipping through my fingers, began to rain down.
Almost immediately, acting in sympathy, the neighbouring boxes opened, and there flowed streams of pink, green, and white [index] cards, and by degrees, from all the boxes, differently coloured [index] cards were poured out murmuring like a waterfall on a mountain-side in April. In a minute they covered the floor with a thick layer of paper. Issuing from their in exhaustible reservoirs with a roar that continually grew in force, each second increased the vehemence of their torrential fall. Swamped up to the knees in cards, Fulgence Tapir observed the cataclysm with attentive nose. He recognised its cause and grew pale with fright.
“ What a mass of art! ” he exclaimed.
I called to him and leaned forward to help him mount the ladder which bent under the shower.
It was too late. Overwhelmed, desperate, pitiable, his velvet smoking-cap and his gold-mounted spectacles having fallen from him, he vainly opposed his short arms to the flood which had now mounted to his arm-pits . Suddenly a terrible spurt of [index] cards arose and enveloped him in a gigantic whirlpool. During the space of a second I could see in the gulf the shining skull and little fat hands of the scholar; then it closed up and the deluge kept on pouring over what was silence and immobility. In dread lest I in my turn should be swallowed up ladder and all I made my escape through the topmost pane of the window.

The original French

Les murs du cabinet de travail, le plancher, le plafond même portaient des liasses débordantes, des cartons démesurément gonflés, des boîtes où se pressait une multitude innombrable de fiches, et je contemplai avec une admiration mêlée de terreur les cataractes de l’érudition prêtes à se rompre.
—Maître, fis-je d’une voix émue, j’ai recours à votre bonté et à votre savoir, tous deux inépuisables. Ne consentiriez-vous pas à me guider dans mes recherches ardues sur les origines de l’art pingouin?
—Monsieur, me répondit le maître, je possède tout l’art, vous m’entendez, tout l’art sur fiches classées alphabétiquement et par ordre de matières. Je me fais un devoir de mettre à votre disposition ce qui s’y rapporte aux Pingouins. Montez à cette échelle et tirez cette boîte que vous voyez là-haut. Vous y trouverez tout ce dont vous avez besoin.
J’obéis en tremblant. Mais à peine avais-je ouvert la fatale boîte que des fiches bleues s’en échappèrent et, glissant entre mes doigts, commencèrent à pleuvoir. Presque aussitôt, par sympathie, les boîtes voisines s’ouvrirent et il en coula des ruisseaux de fiches roses, vertes et blanches, et de proche en proche, de toutes les boîtes les fiches diversement colorées se répandirent en murmurant comme, en avril, les cascades sur le flanc des montagnes. En une minute elles couvrirent le plancher d’une couche épaisse de papier. Jaillissant de leurs inépuisables réservoirs avec un mugissement sans cesse grossi, elles précipitaient de seconde en seconde leur chute torrentielle. Baigné jusqu’aux genoux, Fulgence Tapir, d’un nez attentif, observait le cataclysme; il en reconnut la cause et pâlit d’épouvante.
—Que d’art! s’écria-t-il.
Je l’appelai, je me penchai pour l’aider à gravir l’échelle qui pliait sous l’averse. Il était trop tard. Maintenant, accablé, désespéré, lamentable, ayant perdu sa calotte de velours et ses lunettes d’or, il opposait en vain ses bras courts au flot qui lui montait jusqu’aux aisselles. Soudain une trombe effroyable de fiches s’éleva, l’enveloppant d’un tourbillon gigantesque. Je vis durant l’espace d’une seconde dans le gouffre le crâne poli du savant et ses petites mains grasses, puis l’abîme se referma, et le déluge se répandit sur le silence et l’immobilité. Menacé moi-même d’être englouti avec mon échelle, je m’enfuis à travers le plus haut carreau de la croisée.