From University of California:
Calisphere is the University of California's free public gateway to a world of primary sources. More than 150,000 digitized items including photographs, documents, newspaper pages, political cartoons, works of art, diaries, transcribed oral histories, advertising, and other unique cultural artifacts reveal the diverse history and culture of California and its role in national and world history.
Calisphere's content has been selected from the libraries and museums of the UC campuses, and from a variety of cultural heritage organizations across California. See the list of contributing institutions. Calisphere is a public service project of the California Digital Library (CDL). Through the use of technology and innovation, the CDL supports the assembly and creative use of scholarship for the UC libraries and the communities they serve. Learn more about the CDL.