Fiat Lux, Fiat Latebra: A Celebration of Historical Library Functions

I have no idea where I found this but it's been sitting in my bookmarks folder for a long time. I confess I still haven't read it all, but here you go: D.W. Krummel's Fiat Lux, Fiat Latebra: A Celebration of Historical Library Functions. At least take a look at the seven ages of librarianship nearish the beginning.