The Prelinger Library is a physical space in San Francisco. Their website describes it as:
"An access-oriented, image-rich experimental research library of books, printed ephemera, and over 600 periodical titles. Serving readers, artists, scholars and other iconoclastic thinkers. Centered on histories of U.S. regions, culture, industry, landscape, natural history, media, and politics (and other things). Open to the public."
The Prelinger Library is appropriation friendly.
To visit, check on their site for open hours Prelinger Library.