Calisphere This link opens in a new windowCalisphere is your gateway to California’s remarkable digital collections. Calisphere provides free access to unique and historically important artifacts for research, teaching, and curious exploration. Discover over one million photographs, documents, letters, artwork, diaries, oral histories, films, advertisements, musical recordings, and more. The collections in Calisphere have been digitized and contributed by all ten campuses of the University of California and other important libraries, archives, and museums throughout the state.