Library story from the late 80's:
Swedish libraries were connected to a system where they ordered in which books each library should have*. They made some decisions themselves of course, but otherwise you could just ask them for a specific book and they would then order it so that you could lend it a few weeks later.
Me being a computer geek with a modem, I immediately recognized the dialup tones when they ordered one for me one time, and I chatted with the somewhat tech-illiterate librarian who was pleasantly surprised by my interest in their system and gladly showed it to me.
I also saw the dialup number and the passcode for my local library.
From then on all books I wanted to read just magically appeared in the library just in time for when I came in to lend them.
*) I _think_ this was "Libris", that still exists in some form today, but I'm not 100% sure
