Photogen
Photogen provides free high-resolution photographs for download and reuse. Users can search by keywords or browse by categories.
Callisphere by UC Libraries
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.
Wellcome Images
Wellcome Images is one of the visual collections of the Wellcome Library. It contains themes ranging “from medical and social history to contemporary healthcare and science”. To date, there are close to 130,000 images across different themes.
NYPL Digital Collections
The NYPL Digital Gallery provides access to over 800,000 images digitized from the library’s collections, which spans across different mediums, subjects and time periods. The collections include illuminated manuscripts, historical maps, vintage posters, rare prints and photographs. The collections can also be browse through different categories – Arts & Literature, Cities & Buildings, Culture & Society, History & Geography, Industry & Technology, Nature & Science, and Printing & Graphics.
Ad*Access by Duke University (Libraries)
Funded by the Duke Endowment “Library 2000” Fund, Ad*Access is a project that presents images and database information for over 7,000 advertisements printed in U.S and Canadian newspapers and magazines between 1911 and 1955. The images provide a perspective of major campaigns and companies in 5 main areas: Radio, Television, Transportation, Beauty and Hygiene, and World War II.
Prints & Photographs Online Catalog (PPOC)
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.