Thanks for your comment Bernardo and by way of it, providing a link to your own blog which appears to be a wealth of fun. It reminds me a lot of the sites of Dan Allosso and Jillian Hess who have some overlapping work in these areas or note taking, rhetoric, writing, etc.

I’m aware of Scheper’s booklet as well as his much longer self-published book Antinet Zettelkasten (Greenlamp, 2022) (he thanks me by name in the acknowledgement section). I’ve got Nakládalová in my bibliography, though haven’t read her volume as my Spanish is less than stellar. I have, however, read most of the works of Krajewski, Cevolini, and others (Havens, Blair, Grafton, etc.) who have written extensively on this and related subjects in intellectual history.

Thanks again! I look forward to delving further into your site.