301 8th Street
San Francisco CA   

Use the intercom near the street entrance at 301 8th Street in San Francisco to find a button marked “Prelinger Library.” Press the button to be buzzed in and take the elevator to the second floor.

The Prelinger Library is an independent research library located in San Francisco’s South-of-Market neighborhood. It is open to anyone for research, reading, inspiration, and reuse.

The library is primarily a collection of 19th and 20th century historical ephemera, periodicals, maps, and books, most published in the United States. Much of the collection is image-rich, and in the public domain. The library specializes in material that is not commonly found in other public libraries.
https://prelingerlibrary.org