In my high school era one of the A2's had a PFS: File DB that was a
duplicate of the card catalog. PFS was faster to sort/search than the
other app that the data actually came from. That was something called
Library Circulation 1 or such.

If you look here, there's a ton of Apple (][ and ///) solutions for
libraries at the time.. (Dec. 1984)

http://www.wiredlibrarian.com/wln/84%2012%20dec.htm

The archive is in itself an interesting window back in time- the
newsletter wasn't that old and was created for the beginning of
microcomputer use in libraries since libraries tended to be in lessor
funded realms that usually meant they had stuck it out without
technology for a bit longer.

Now finding a drawer in the library is a jaw dropping experience. IF
it's there it probably isn't updated. Where as these A2 and TRS-80
programs were primarily meant for behind the scenes work. They were
databases that would also print the card catalog forms which tended to
be stickers that were stuck to blank cards.

Heh.. the days of the card catalog and empty table opposite it.. walk
up, find the drawer you want- take it out if you wanted- and put it on
the table to look through it or just look while it was in there. Write
down the Dewey # and go for it.
Now the terminal tells you where the book is in some cases, by aisle,
row and shelf.
--- SBBSecho 2.12-Win32