The Desk Set (1957) Katherine Hepburn. Wonderful view of the future of libraries.
Ex Libris: The New York Public Library (2017). An amazing documentary about the NYPL. Little dialogue or script, it is a compelling movie. 97% on Rotten Tomatoes! 3 hours and 26 minutes, but absolutely compelling. https://g.co/kgs/SoseDY
The Library Book (2018), by Susan Orlean. Wonderful history of one of the great libraries in the country.
The Library of Babel, Jorge Luis Borges (1941). Bizarre book about a library with every book past, present and future. Someone has taken the book to a whole new level: http://libraryofbabel.info/
The Book of Imaginary Beings, Jorge Luis Borges (1957). More of a literary zoo than a library. But fascinating. Link is to an illustrated version.
The Library; An Unquiet History (2003) Matthew Battles.