“An open, distributed network of comprehensive online resources that ... draw on the nation’s living heritage from libraries, universities, archives, and museums" includes millions of images on a wide range of topics.
"Online catalog provides access through group or item records to about 75% of the division's holdings.... Many of the catalog records are accompanied by digital images--about 1.2 million digital images in all."
Guide to about 50 substantial searchable online picture collections hosted by libraries, museums, and archives primarily in the US. Sources "cover historical and documentary images in general subject areas, rather than those that focus on a single topic."
650,000 images digitized from primary sources and printed rarities including illuminated manuscripts, historical maps, vintage posters, rare prints and photographs, illustrated books, fashion plates, and other printed ephemera.
"A database of pictures of the colonial Americas from Hudsons Bay to Tierra del Fuego based entirely on primary sources printed or created between 1492 and 1825." The 7,000+ images are scanned from original works in the John Carter Brown Library at Brown University and are accompanied by extensive descriptive information.
70,000 images from the History of Medicine Division of the U.S National Library of Medicine "including portraits, photographs, caricatures, genre scenes, posters, and graphic art illustrating the social and historical aspects of medicine dated from the 15th to 21st century."