Editorial Cartoon ResourcesAssociation of American Cartoonists.
Association of Canadian Editorial Cartoonists.
Caroline and Erwin Swann Collection of Caricature and Cartoon. (Special Collections in the Library of Congress.)
The Cartoon Research Library, Ohio State University.
Comic Art Collection Home Page. Michigan State University Libraries.
Daryl Cagle's Professional Cartoonists Index.
Dr. Seuss Went to War: A Catalog of Political Cartoons by Dr. Seuss. Mandeville Special Collections Library.
Editorial Cartoons. A database provided by United Media.
Oliphant's Anthem: Pat Oliphant at the Library of Congress. Exhibit of the works of Pulitzer Prize winning editorial cartoonist.
Political Prints from the Library of Congress, 1766-1876. Harpweek.
Presidential Election Cartoons, 1860-1884. Harpweek.
Uniting Mugwumps and the Masses: Puck's Role in Gilded Age Politics. Dan Backer, University of Virginia. August 1996. Includes a brief history of cartoons.
World War I Cartoons.