The equivalent of an alphabetical register of company (firm) names within card index for business would be a register of author names in a bibliographical file.

I've done something like this when I think a particular reference(s) can answer a question related to a train of thought. But I keep cards of unread sources at the front of my sources section so that it's easier to pull it out frequently to prioritize and decide what I should be reading or working on next. These will then have links to the open questions I've noted, so that I can go back to those sections either as I'm reading/writing or to add those ideas into the appropriate folgezettel. These sorts of small amounts of work documented briefly can add up quickly over time. Source cards with indications of multiple open questions that might be answered is sometimes a good measure of desire to read, though other factors can also be at play.

That to-read pile of bibliographic source notes (a mini antilibrary) is akin to walking into a party and surveying a room. I may be aware of some of the people I haven't met yet and the conversations we might have, but if there are interesting questions I know I want to ask of specific ones or conversations I already know I want to have, it can be more productive to visit those first.

This sort of practice has been particularly helpful for times when I want to double check someone's sources or an original context, but don't have the time to do it immediately, don't want to break another extended train of thought, have to wait on materials, or may have to make a trip to consult physical materials that are singular or rare. For quick consultative reading, this can be a boon when I know I don't want or need to read an entire work, but skimming a chapter or a few pages for a close reading of a particular passage. I'll often keep a pile of these sorts of sources at hand so that I can make a short trip to a library, pick them up, find what I need and move on without having to recreate large portions of context to get the thing done because I've already laid most of the groundwork.

that he used it little in later years. His author-title entries usually went into the main file, after the appropriate subject index cards.

This is a curious pattern and not often seen. Apparently it was Paxson's practice to place his author-title entries into his main file following the related subject index cards instead of in a completely separate bibliographical file. He did apparently have one comprised of six scantily filled drawers which he kept in his coat closet, but it was little used in his later years.

What benefits might this relay? It certainly more directly relates the sources closer in physical proximity within one's collection to the notes to which they relate. This might be of particular beneficial use in a topical system where all of one's notes relating to a particular subject are close physically rather than being linked or cross referenced as they were in Luhmann's example.

A particular color of cards may help in this regard to more easily find these sources.

Also keep in mind that Paxson's system was topical-chronological, so there may also be reasons for doing this that fit into his chronological scheme. Was he filing them in sections so that the publication dates of the sources fit into this scheme as well? This may take direct review to better known and understand his practice.

Noting the dates of available materials within archives or sources can be useful on bibliography notes for either planning or revisiting sources. (p16,18)

Similarly one ought to note missing dates, data, volumes, or resources at locations to prevent unfruitfully looking for data in these locations or as a note to potentially look for the missing material in other locations. (p16)

When interviewing subjects, one should not only note the date, time, and location, but get (preferably written) permission to (record) or quote them. Notes about their memory, recall, or behavior may be useful, if nothing else as a reminder for crossing checking their information with other potential sources.

Not mentioned in any other sources I've consulted (yet), Goutor recommends adding notes about the physical location of bibliographic sources to bibliographic notes. This should include details about not only the library and even call numbers, to minimize needing to look them up again in the future, but to have notes about arrangements and contacts which may needed to revisit harder to access resources. (p14) This can also be useful for sources like maps which may be needed for higher quality reproduction in the final text. (p15)

Goutor recommended the use of bibliographic cards not only for their standard uses as sourcing, information, and footnotes, but for creating potential scopes of work and research for planning purposes, especially in planning out one's reading and note taking using various archives and resources to make more effective and productive use of one's time. (p13) This can be potentially very useful for visiting archives and sources for which one does not have easy or frequent access.

reply to: https://www.reddit.com/r/antinet/comments/x2f4hn/should_i_always_create_a_bibnote/

If you want to be lazy you could just create the one card with the quote and full source and save a full bibliographical note. Your future self will likely be pleasantly surprised if you do create a full bib note (filed separately) which allows for a greater level of future findability and potential serendipity, It may happen when you've run across that possibly obscure author multiple times and it may spur you to read other material by them or cross reference other related authors. It's these small, but seemingly "useless", practices in the present that generate creativity and serendipity over longer periods of time that really bring out the compounding value of ZK.

More and more I find that the randomly referenced and obscure writer or historical figure I noted weeks/months/years ago pops up and becomes a key player in research I'm doing now, but that I otherwise would have long forgotten and thus not able to connect or inform my current pursuits. These golden moments are too frequently not written about or highlighted properly in much of the literature about these practices.

Naturally, however, everyone's practices may differ. You want to save the source at the very least, even if it's just on that slip with the quote. If you're pressed for time now, save the step and do it later when you install the card.

Often is the time that I don't think of anything useful contemporaneously but then a week or two later I'll think of something relevant and go back and write another note or two, or I'll want to recommend it to someone and then at least it's findable to recommend.

Frequently I find that the rule "If it's worth reading, then it's worth writing down the author, title, publisher and date at a minimum" saves me from reading a lot of useless material. Of course if you're researching and writing about the broader idea of "listicles" then perhaps you have other priorities?