"French Revolution Images: Iconography from the collections of the Bibliothèque nationale de France provides access to the most complete searchable digital archive of French Revolution images available." From Stanford University Libraries.
Collection of Napoleonic satirical prints produced between 1792 and 1829 from Germany, Britain, France, Holland, Russia, by such noted artists as James Gillray and George Cruikshank. Most have also been archived in Luna Insight.
"This database consists of images of those posters covering social protest movements such as Anarchism, Civil Liberties, Colonialism, Communism, Ecology, Labor, Pacifism, Sexual Freedom, Socialism, Women, and Youth/Student Protest." From the University of Michigan.
These posters were issued by agencies ranging from the Department of Agriculture to the Forest Service, the National Archives and Records Administration, the Department of Defense, and the National Aeronautics and Space Administration. From Central Washington University Libraries via JSTOR.
British prints: "spans the years 1508 to 1939, with some ephemera of the 1940s and 1950s and a separate collection of post-1960 additions. The collection is strongest in 19th and early 20th century ephemera, with significant holdings in the 18th century."
"Explore short articles and examine scrapbooks, political pamphlets, photographs and posters to discover how suffragists and suffragettes campaigned for this democratic right." From the British Library.