A note about my article on Goitein with respect to Zettelkasten Output Processes

Not long ago I made a Call for Model Examples of Zettelkasten Output Processes. To answer a part of that call and to highlight my own reading, note taking, and writing process, in the production of writing S.D. Goitein’s Card Index, I’ve included red # hyperlinks to all of the available digital notes I took while doing my research which is synthesized there. The interested reader can then look back to see the date and timestamps of all of my original notes and compare them if they wish to the final text of the piece. One will notice that most of the Goitein-specific portions occurred on two consecutive days while other portions were tied in from notes taken over the past two years including a few which may have been older, but revised for import.

I’m hoping that this example will give the aspiring interested note takers, commonplacers, and zettelkasten maintainers a peek into a small portion of my own specific process if they’d like to look more closely at such an example.

Following the reading and note taking portions of the process, I spent about 5 minutes scratching out a brief outline for the shape of the piece onto one of my own 4 x 6″ index cards. I then spent 15 minutes cutting and pasting all of what I felt the relevant notes were into the outline and arranging them. I then spent about two hours writing and (mostly) editing the whole. In a few cases I also cut and pasted a few things from my digital notes which I also felt would be interesting or relevant (primarily the parts on “notes per day” which I had from prior research.) All of this was followed by about an hour on administrivia like references and HTML formatting to put it up on my website. While some portions were pre-linked in a Luhmann-ese zettelkasten sense, other portions like the section on notes per day were a search for that tag in my digital repository in Hypothes.is which allowed me to pick and choose the segments I wanted to cut and paste for this particular piece.

From the outline to the finished piece I spent about three and a half hours to put together the 3,500 word piece. The research, reading, and note taking portion took less than a day’s worth of entertaining diversion to do including several fun, but ultimately blind alleys which didn’t ultimately make the final cut.

For the college paper writers, this entire process took less than three days off and on to produce what would be the rough equivalent of a double spaced 15 page paper with footnotes and references. Naturally some of my material came from older prior notes, and I would never suggest one try to cram write a paper this way. However, making notes on a variety of related readings over the span of a quarter or semester in this way could certainly allow one to relatively quickly generate some reasonably interesting material in a way that’s both interesting to and potentially even fun for the student and which could potentially push the edges of a discipline—I was certainly never bored during the process other than some of the droller portions of cutting/pasting.

While the majority of the article is broadly straightforward stringing together of facts, one of the interesting insights for me was connecting a broader range of idiosyncratic note taking and writing practices together across time and space to the idea of statistical mechanics. This is slowly adding to a broader thesis I’m developing about the evolving life of these knowledge practices over time. I can’t wait to see what develops from this next.

In the meanwhile, I’m happy to have some additional documentation for another prominent zettelkasten example which resulted in a body of academic writing which exceeds the output of Niklas Luhmann’s own corpus of work. The other outliers in the example include a significant contribution to a posthumously published book as well as digitized collection which is still actively used by scholars for its content rather than for its shape. I’ll also note that along the way I found at least one and possibly two other significant zettelkasten examples to take a look at in the near future. The assured one has over 15,000 slips, apparently with a hierarchical structure and a focus on linguistics which has some of the vibes of John Murray’s “slip boxes” used in the creation of the Oxford English Dictionary.

S.D. Goitein’s Card Index (or Zettelkasten)

Abstract

Scholar and historian S.D. Goitein built and maintained a significant collection of over 27,000 notes in the form of a card index (or zettelkasten1) which he used to fuel his research and academic writing output in the mid to late twentieth century. The collection was arranged broadly by topical categories and followed in the commonplace book tradition though it was maintained on index cards. Uncommon to the space, his card index file was used by subsequent scholars for their own research and was ultimately digitized by the Princeton Geniza Project.

Introduction to S.D. Goitein and his work

Shelomo Dov Goitein (1900-1985) was a German-Jewish historian, ethnographer, educator, linguist, Orientalist, and Arabist who is best known for his research and work on the documents and fragments from the Cairo Geniza, a fragmented collection of some 400,000 manuscript fragments written between the 6th and 19th centuries.

Born in Burgkunstadt, Germany in 1900 to a line of rabbis, he received both a secular and a Talmudic education. At the University of Frankfurt he studied both Arabic and Islam from 1918-1923 under Josef Horovitz and ultimately produced a dissertation on prayer in Islam. An early Zionist activist, he immigrated to Palestine where he spent 34 years lecturing and teaching in what is now Israel. In order to focus his work on the Cairo Geniza, he moved to Philadelphia in 1957 where he lived until he died on February 6, 1985.

After becoming aware of the Cairo Geniza’s contents, S.D. Goitein ultimately devoted the last part of his life to its study. The Geniza, or storeroom, at the Ben Ezra Synagogue was discovered to hold manuscript fragments made of vellum, paper, papyrus, and cloth and written in Hebrew, Arabic, and Aramaic covering a wide period of Middle Eastern, North African, and Andalusian Jewish history. One of the most diverse collections of medieval manuscripts in the world, we now know it provides a spectacular picture of cultural, legal, and economic life in the Mediterranean particularly between the 10th and the 13th centuries. Ultimately the collection was removed from the Synagogue and large portions are now held by a handful of major research universities and academic institutes as well as some in private hands. It was the richness and diversity of the collection which drew Goitein to study it for over three decades.

Research Areas

Goitein’s early work was in Arabic and Islamic studies and he did a fair amount of work with respect to the Yemeni Jews before focusing on the Geniza.

As a classically trained German historian, he assuredly would have been aware of the extant and growing popularity of the historical method and historiography delineated by the influential works of Ernst Bernheim (1899) and Charles Victor Langlois and Charles Seignobos (1898) which had heavily permeated the areas of history, sociology, anthropology, and the humanities by the late teens and early 1920s when Goitein was at university.

Perhaps as all young writers must, in the 1920s Goitein published his one and only play Pulcellina about a Jewish woman who was burned at the stake in France in 1171. [@NationalLibraryofIsrael2021] # It is unknown if he may have used a card index method to compose it in the way that Vladimir Nabokov wrote his fiction.

Following his move to America, Goitein’s Mediterranean Society project spanned from 1967-1988 with the last volume published three years after his death. The entirety of the project was undertaken at the University of Pennsylvania and the Institute for Advanced Study to which he was attached. # As an indicator for its influence on the area of Geniza studies, historian Oded Zinger clearly states in his primer on research material for the field:

The first place to start any search for Geniza documents is A Mediterranean Society by S. D. Goitein. [@Zinger2019] #

Further gilding his influence as a historian is a quote from one of his students:

You know very well the verse on Tabari that says: ‘You wrote history with such zeal that you have become history yourself.’ Although in your modesty you would deny it, we suggest that his couplet applies to yourself as well.”
—Norman Stillman to S.D. Goitein in letter dated 1977-07-20 [@NationalLibraryofIsrael2021] #

In the early days of his Mediterranean Society project, he was funded by the great French Historian Fernand Braudel (1902-1985) who also specialized on the Mediterranean. Braudel had created a center in Paris which was often referred to as a laboratoire de recherches historiques. Goitein adopted this “lab” concept for his own work in American, and it ultimately spawned what is now called the Princeton Geniza Lab. [@PrincetonGenizaLab] #

The Card Index

Basics

In addition to the primary fragment sources he used from the Geniza, Goitein’s primary work tool was his card index in which he ultimately accumulated more than 27,000 index cards in his research work over the span of 35 years. [@Rustow2022] # Goitein’s zettelkasten ultimately consisted of twenty-six drawers of material, which is now housed at the National Library of Israel. [@Zinger2019] #.

Goitein’s card index can broadly be broken up into two broad collections based on both their contents and card sizes:

  1. Approximately 20,000 3 x 5 inch index cards2 are notes covering individual topics generally making of the form of a commonplace book using index cards rather than books or notebooks.
  2. Over 7,000 5 x 8 inch index cards which contain descriptions of a fragment from the Cairo Geniza. [@Marina2022] [@Zinger2019] #

The smaller second section was broadly related to what is commonly referred to as the “India Book” # which became a collaboration between Goitein and M.A. Friedman which ultimately resulted in the (posthumous) book India Traders of the Middle Ages: Documents from the Cairo Geniza “India Book” (2007).

The cards were all written in a variety of Hebrew, English, and Arabic based on the needs of the notes and the original languages for the documents with which they deal.

In addition to writing on cards, Goitein also wrote notes on pieces of paper that he happened to have lying around. [@Zinger2019] # Zinger provides an example of this practice and quotes a particular card which also shows some of Goitein’s organizational practice:

 In some cases, not unlike his Geniza subjects, Goitein wrote his notes on pieces of paper that were lying around. To give but one example, a small note records the location of the index cards for “India Book: Names of Persons” from ‘ayn to tav: “in red \ or Gray \ box of geographical names etc. second (from above) drawer to the left of my desk 1980 in the left right steel cabinet in the small room 1972” is written on the back of a December 17, 1971, note thanking Goitein for a box of chocolate (roll 11, slide 503, drawer13 [2.1.1], 1191v). 

This note provides some indication of some of his arrangements for note taking and how he kept his boxes. They weren’t always necessarily in one location within his office and moved around as indicated by the strikethrough, according to his needs and interests. It also provides some evidence that he revisited and updated his notes over time.

In Zinger’s overview of the documents for the Cairo Geniza, he also provides a two page chart breakdown overview of the smaller portion of Goitein’s 7,000 cards relating to his study of the Geniza with a list of the subjects, subdivisions, microfilm rolls and slide numbers, and the actual card drawer numbers and card numbers. These cards were in drawers 1-15, 17, and 20-22. [@Zinger2019] #

Method

Zinger considers the collection of 27,000 cards “even more impressive when one realizes that both sides of many of the cards have been written on.” [@Zinger2019] Goitein obviously broke the frequent admonishment of many note takers (in both index card and notebook traditions) to “write only on one side” of his cards, slips, or papers. # This admonishment is seen frequently in the literature as part of the overall process of note taking for writing includes the ability to lay cards or slips out on a surface and rearrange them into logical orderings before copying them out into a finished work. One of the earliest versions of this advice can be seen in Konrad Gessner’s Pandectarum Sive Partitionum Universalium (1548).

Zinger doesn’t mention how many of his 27,000 index cards are double-sided, but one might presume that it is a large proportion. # Given that historian Keith Thomas mentions that without knowing the advice he evolved his own practice to only writing on one side [@Thomas2010], it might be interesting to see if Goitein evolved the same practice over his 35 year span of work. #

The double sided nature of many cards indicates that they could have certainly been a much larger collection if broken up into smaller pieces. In general, they don’t have the shorter atomicity of content suggested by some note takers. Goitein seems to have used his cards in a database-like fashion, similar to that expressed by Beatrice Webb [@Webb1926], though in his case his database method doesn’t appear to be as simplified or as atomic as hers. #

Card Index Output

As the ultimate goal of many note taking processes is to create some sort of output, as was certainly the case for Goitein’s work, let’s take a quick look at the result of his academic research career.

S.D. Goitein’s academic output stands at 737 titles based on a revised bibliography compiled by Robert Attal in 2000, which spans 93 pages. [@Attal2000] # # A compiled academia.edu profile of Goitein lists 800 articles and reviews, 68 books, and 3 Festschriften which tracks with Robert Atta’s bibliography. #. Goitein’s biographer Hanan Harif also indicates a total bibliography of around 800 publications. [@NationalLibraryofIsrael2021] #. The careful observer will see that Attal’s list from 2000 doesn’t include the results of S.D. Goitein’s India book work which weren’t published in book form until 2007.

Perhaps foremost within his massive bibliography is his influential and magisterial six volume A Mediterranean Society: The Jewish communities of the Arab World as Portrayed in the Documents of the Cairo Geniza (1967–1993), a six volume series about aspects of Jewish life in the Middle Ages which is comprised of 2,388 pages. # When studying his card collection, one will notice that a large number of cards in the topically arranged or commonplace book-like portion were used in the production of this magnum opus. # Zinger says that they served as the skeleton of the series and indicates as an example:

 …in roll 26 we have the index cards for Mediterranean Society, chap. 3, B, 1, “Friendship” and “Informal Cooperation” (slides 375–99, drawer 24 [7D], 431–51), B, 2, “Partnership and Commenda” (slides 400–451, cards 452–83), and so forth. #

Given the rising popularity of the idea of using a zettelkasten (aka slip box or card index) as a personal knowledge management tool, some will certainly want to compare the size of Goitein’s output with that of his rough contemporary German sociologist Niklas Luhmann (1927-1990). Luhmann used his 90,000 slip zettelkasten collection to amass a prolific 550 articles and 50 books. [@Schmidt2016]. Given the disparity in the overall density of cards with respect to physical output between the two researchers one might suspect that a larger proportion of Goitein’s writing was not necessarily to be found within his card index, but the idiosyncrasies of each’s process will certainly be at play. More research on the direct correlation between their index cards and their writing output may reveal more detail about their direct research and writing processes.

Digital Archive

Following his death in February 1985, S.D. Goitein’s papers and materials, including his twenty-six drawer zettelkasten, were donated by his family to the Jewish National and University Library (now the National Library of Israel) in Jerusalem where they can still be accessed. [@Zinger2019] #

In an attempt to continue the work of Goitein’s Geniza lab, Mark R. Cohen and A. L. Udovitch made arrangements for copies of S.D. Goitein’s card index, transcriptions, and photocopies of fragments to be made and kept at Princeton before the originals were sent. This repository then became the kernel of the modern Princeton Geniza Lab. [@PrincetonGenizaLaba] # #

Continuing use as an active database and research resource

The original Princeton collection was compacted down to thirty rolls of microfilm from which digital copies in .pdf format have since been circulating among scholars of the documentary Geniza. [@Zinger2019] #

Goitein’s index cards provided a database not only for his own work, but for those who studied documentary Geniza after him. [@Zinger2019] # S.D. Goitein’s index cards have since been imaged and transcribed and added to the Princeton Geniza Lab as of May 2018. [@Zinger2019] Digital search and an index are also now available as a resource to researchers from anywhere in the word. #

Historically it has generally been the case that repositories of index cards like this have been left behind as “scrap heaps” which have meant little to researchers other than their originator. In Goitein’s case his repository has remained as a beating heart of the humanities-based lab he left behind after his death.

In Geniza studies the general rule of thumb has become to always consult the original of a document when referencing work by other scholars as new translations, understandings, context, history, and conditions regarding the original work of the scholar may have changed or have become better understood.[@Zinger2019] # In the case of the huge swaths of the Geniza that Goitein touched, one can not only reference the original fragments, but they can directly see Goitein’s notes, translations, and his published papers when attempting to rebuild the context and evolve translations.

Posthumous work

Similar to the pattern following Walter Benjamin’s death with The Arcades Project (1999) and Roland Barthes’ Mourning Diary (2010), Goitein’s card index and extant materials were rich enough for posthumous publications. Chief among these is India Traders of the Middle Ages: Documents from the Cairo Geniza “India Book.” (Brill, 2007) cowritten by Mordechai Friedman, who picked up the torch where Goitein left off. # # However, one must notice that the amount of additional work which was put into Goitein’s extant box of notes and the subsequent product was certainly done on a much grander scale than these two other efforts.

Notes per day comparison to other well-known practitioners

Given the idiosyncrasies of how individuals take their notes, the level of their atomicity, and a variety of other factors including areas of research, other technology available, slip size, handwriting size, etc. comparing people’s note taking output by cards per day can create false impressions and dramatically false equivalencies. This being said, the measure can be an interesting statistic when taken in combination with the totality of these other values. Sadly, the state of the art for these statistics on note taking corpora is woefully deficient, so a rough measure of notes per day will have to serve as an approximate temporary measure of what individuals’ historical practices looked like.

With these caveats firmly in mind, let’s take a look at Goitein’s output of roughly 27,000 cards over the span of a 35 year career: 27,000 cards / [35 years x 365 days/year] gives us a baseline of approximately 2.1 cards per day. #. Restructuring this baseline to single sided cards, as this has been the traditional advice and practice, if we presume that 3/4ths of his cards were double-sided we arrive at a new baseline of 3.7 cards per day.

Gotthard Deutch produced about 70,000 cards over the span of about 17 years giving him an output of about 11 cards per day. [@Lustig2019] #

Niklas Luhmann’s collection was approximately 90,000 cards kept over about 41 years giving him about 6 cards per day. [@Ahrens2017] #

Hans Blumenberg’s zettelkasten had 30,000 notes which he collected over 55 years averages out to 545 notes per year or roughly (presuming he worked every day) 1.5 notes per day. [@Kaube2013] #

Roland Barthes’ fichier boîte spanned about 37 years and at 12,250 cards means that he was producing on average 0.907 cards per day. [@Wilken2010] If we don’t include weekends, then he produced 1.27 cards per day on average. #

Finally, let’s recall again that it’s not how many thoughts one has, but their quality and even more importantly, what one does with them which matter in the long run. # Beyond this it’s interesting to see how influential they may be, how many they reach, and the impact they have on the world. There are so many variables hiding in this process that a fuller analysis of the statistical mechanics of thought with respect to note taking and its ultimate impact are beyond our present purpose.

Further Research

Based on a cursory search, no one seems to have picked up any deep research into Goitein’s card collection as a tool the way Johannes F.K. Schmidt has for Niklas Luhmann’s archive or the Jonathan Edwards Center at Yale has for Jonathan Edwards’ Miscellanies Index.

Goitein wrote My Life as a Scholar in 1970, which may have some methodological clues about his work and method with respect to his card index. He also left his diaries to the National Library of Israel as well and these may also have some additional clues. # Beyond this, it also stands to reason that the researchers who succeeded him, having seen the value of his card index, followed in his footsteps and created their own. What form and shape do those have? Did he specifically train researchers in his lab these same methods? Will Hanan Harif’s forthcoming comprehensive biography of Goitein have additional material and details about his research method which helped to make him so influential in the space of Geniza studies? Then there are hundreds of small details like how many of his cards were written on both sides? # Or how might we compare and contrast his note corpus to others of his time period? Did he, like Roland Barthes or Gotthard Deutch, use his card index for teaching in his earlier years or was it only begun later in his career?

Other potential directions might include the influence of Braudel’s lab and their research materials and methods on Goitein’s own. Surely Braudel would have had a zettelkasten or fichier boîte practice himself?

References

Footnotes

  1. In my preliminary literature search here, I have not found any direct references to indicate that Goitein specifically called his note collection a “Zettekasten”. References to it have remained restricted to English generally as a collection of index cards or a card index.↩︎
  2. While not directly confirmed (yet), due to the seeming correspondence of the number of cards and their corpus descriptions with respect to the sizes, it’s likely that the 20,000 3 x 5″ cards were his notes covering individual topics while the 7,000 5 x 8″ cards were his notes and descriptions of a single fragment from the Cairo Geniza. #↩︎

Singer Business Furniture 20 gauge steel industrial 16 drawer index card filing cabinet

I suppose if you’re gonna goin “all-in” on having a zettelkasten (slip box) or index card-based commonplace book you may as well invest in some serious atomic-era heavy steel hardware…

So today I took the plunge and picked up a Singer Business Furniture 20 gauge steel industrial index card filing cabinet. It’s the sort of thing that Niklas Luhmann or Roland Barthes may have only dreamt of.

Angle on an open drawer with two individual card files
One of the double drawers pulled out.

The monster has 8 sliding platform chassis with 16 removable file drawers. I’ve done a little bit of clean up on it, but it has been well loved over time. Much like my prior furniture refurbishment projects, I expect I’ll bead blast off the original finish and rust and re-enamel it. I’m debating colors or potentially going brushed steel with heavy clear coat, though that’s a lot of work for the size and configuration. I’m initially thinking perhaps gunmetal grey with metallic blue flecked paint to match my desk, or perhaps a fun orange highlight color on the drawer fronts?

Specifications

Singer Business Furniture, Corry Jamestown index card filing cabinet (114 OB)

  • 8 slider chassis with 16 individually (and easily) removeable drawers
  • Exterior dimensions: 22 7/8″ wide x 52″ tall x 28 3/4″ deep
  • Interior drawer dimensions: 9 3/8″ wide x 4 3/4″ tall x 27 3/8″ deep (or 26 1/8″ deep with the card stops installed)
  • Fits cards: 3×5″, 4×6″, 7 3/8 x 3 1/4″ (Hollerinth cards)
  • Removable metal slider card stops
  • 13 removeable index card rods (3 missing)
  • Aluminum drawer pulls
  • Aluminum label frames
  • Original industrial beige color, chipped and scratched
  • 20 gauge steel

I thought about weighing it, but the thing is just too big for any of the nearby scales I’ve got access to. It’s definitely a bear to move even by sliding and required a heavy dolly and at least two people to maneuver. Three or more would be required to pick it up physically.  One drawback to the size and weight is that it isn’t easily portable if there were an emergency, but the construction is so solid that it should definitely survive the most dire earthquakes or possibly nuclear bomb blasts. I suspect it’ll be a bit before I have multiple drawers full, so I can always individually remove active drawers.

A quick calculation on the front of an index card—no more backs of envelopes for me!—indicates that packs of relatively standard Oxford index cards should put the capacity of this monster at 55,700 index cards (with the drawer stops in place).

Photos

Features

The drawers should be nice and roomy for the 4×6″ index cards I’ve been using, but can also accommodate collections of smaller 3×5″ cards I’ve got.

While the drawers come with index card rods to hold the cards physically in their files, I suspect I won’t be using them. They seem to be of a design that would require custom cards for utilizing this feature anyway. I do quite like the rod design as the thumbscrews on the outside have small nubs on them with a key-like cut out on the drawer front with a compression washer. One then inserts the rod, fits it into the moveable card stop, and pushes it into the keyhole. A quarter or half turn of the rod and thumbscrew locks the rod into the cabinet.

The index card file stops are easily removable and have a simple springloaded clamp mechanism for moving them easily within the drawer. 

While used, the entire thing is in generally excellent shape. Almost all the original hardware is still extant and the drawer mechanisms all slide smoothly, so those won’t require much, if any real work.

Because the filing cabinet is so massive and generally immovable, a fun and terrifically convenient feature is that each of the 16 file drawers are individually removable. This allows one to take a particular drawer or two to their desk and work on them before needing to return them to the cabinet when one is done. To make this drawer movement easier, in addition to the explicit handle on the front of each drawer, there’s an oval hole on the back of each drawer which functions as a handle on the other end.  This is likely how I’ll use it, at least until I’ve refinished the cabinet and the drawers and move it into my office space permanently. 

Individual drawers of cards can be removed from the filing cabinet. Here's one that has been removed and is sitting sideways on top of the file drawer that had been pulled out.
One of the individual file drawers removed and sitting on its mate.

Because the files are wide and long enough, I might also profitably use the file for holding 8 1/2 x 11″ material stacked up in piles if necessary. 

Naming

Some have talked about naming their zettelkasten. I’ve been considering calling the whole cabinet “The Ark of Studies” (Arca studiorum) after Thomas Harrison’s invention in the 1640s as it also contains a nod to Hugh of St. Victor’s mnemonic work relating to Noah’s Ark. Perhaps I’ll hame it Stonehenge II, because I’ll rely on it as a “forgetting machine” and it’s almost as big and heavy as a bluestone from the Preseli Hills in Wales—especially if I paint it that color. Beyond this perhaps I might give each individual drawer a name. This leaves sixteen slots, so I’m thinking about naming them after famous figures in the history of note taking and related spaces of intellectual history.

Right now it’ll likely be a subset of Aristotle, Cicero, Quintilian, Seneca, Boethius, Thomas Aquinas, Desiderius Erasmus, Rodolphus Agricola, Philip Melancthon, Konrad Gessner, John Locke, Carl Linnaeus, Thomas Harrison, Vincentius Placcius, Gottfried Wilhelm Leibniz, Niklas Luhmann, Beatrice Webb, Marcel Mauss, Claude Lévi-Strauss, Mortimer J. Adler, Niklas Luhmann, Roland Barthes, Vladimir Nabokov, George Carlin (I’ve got to have a drawer dedicated to comedy right?), Twyla Tharp, and Eminem. Who else am I missing? Who should I consider?

Oddities

Being a piece of used office furniture, it naturally came with some surplus junk inside. Most of this was of the paperclip and rubber band nature with plenty of dust and lint. There were a full collection of drawer labels with someone’s handwritten numbers for the files the card index once contained. Unexpected finds included some screws, nuts and bolts, part of a hacksaw blade, a rotary saw blade, some drill bits, a socket wrench fitting, and—most puzzling—a live round of ammunition! Every zettelkasten should have one of these right? 

view of bullet from behind as it sits on filing cabinet
The oddest thing I found hiding in my new slip box.

So go ahead and bite the bullet! Get your own cabinet, and start your analog zettelkasten today.

 

Lifestyles of the Note Takers & Intellectuals: Vladimir Nabokov

Vladimir Nabokov famously wrote most of his works including Lolita using index cards in a slip box.

The slipbox and index cards on which Vladimir Nabokov wrote his novel Lolita.
The slipbox and index cards on which Vladimir Nabokov wrote his novel Lolita.

He ultimately died in 1977 leaving an unfinished manuscript in note card form for the novel The Original of Laura. Penguin later published the incomplete novel with in 2012 with the subtitle A Novel in Fragments. Unlike most manuscripts written or typewritten on larger paper, this one came in the form of 138 index cards. Penguin’s published version recreated these cards in full-color reproductions including the smudges, scribbles, scrawlings, strikeouts, and annotations in English, French, and Russian. Perforated, one could tear the cards out of the book and reorganize in any way they saw fit or even potentially add their own cards to finish the novel that Nabokov couldn’t.

Index card with hand drawn table of ages and measurements
Index card on which Nabokov collated notes on ages, heights, and measurements for school aged girls as research for his title character Lolita. (via Library of Congress

More details at: https://www.openculture.com/2014/02/the-notecards-on-which-vladimir-nabokov-wrote-lolita.html