Callisphere is “the University of California’s free public gateway to a world of primary sources”. Powered by the California Digital Library (CDL), the platform currently have more than 230,000 images, contributed by 139 archives, libraries, museums, and historical societies in California. Users may search or explore the images across different themes or topics.
Driven by the LOC Prints & Photographs Division, PPOC contains catalog records and digital images from their holdings. These includes photographs, fine and popular prints and drawings, posters, and architectural and engineering drawings.