The Library's California History Section holds a premier collection of documents from and about California's rich history. Our vaults house thousands of rare books, maps, newspapers, and periodicals in addition to a huge collection of one-of-a-kind photographs, letters, and ephemeral items such as posters, pamphlets and sheet music. Visit https://www.library.gov/california-history/ for more information. The Sutro Library (the State Library's San Francisco branch) holds the original collection of Adolph Sutro (1830-1898), California businessman and San Francisco mayor. The library has a large collection of publications and items dating from the 13th to the 21st centuries as well as one of the largest genealogy collections in the U.S. Visit https://www.library.ca.gov/sutro/ for more information.