Princeton University Poster Collection
An extensive and comprehensive collection of posters from World War I and World War II.
National Air and Space Museum Technical Reference Files: Space History
The Technical Reference Files comprise an artificial collection that currently contains 1,900 cubic feet of aviation and space related materials, organized in 22 subject series. File materials include photographs, press releases, clippings, correspondence, reports, and brochures, on individuals, organizations, events, and objects.