Other
New York University: Labor Arts
Numerous collections of cartoons, buttons, posters, murals, photographs, and similar artifacts, all pertaining to history of American labor, especially its drive to organize and its history of protest. Stretches back to the earliest days...
Curated OER
Educational Technology Clearinghouse: Clip Art Etc: Samuel Gompers
(1850-1924) British labor leader who became a major figure in the American labor movement.