Thomas G. Lannon of the New York Public Library has posted “A History of the Library as Seen Through Notable Researchers” at the Library blog:
One unique way to trace the history of the Library is through call slips. In order to use books in the research collection, patrons request specific titles by filling out a call slip, which includes the following information: author, title, and call number. Not all call slips have been saved over the years, but some have been preserved for posterity. Here are their stories.
Read about Max Eastman and Aristophanes (1920), Lewis Mumford and Moby-Dick (1928), and other relics of bygone research, each with an image of the bit of paper by which the books were requested, which has changed pleasingly little over the years. (I’m sure I have some of them around the house; I filled out more than I ever actually turned in.) Thanks, Leslie!