ARTstor database now houses a collection of photographs from Magnum Photos International. From the ARTstor homepage:
This first launch of more than 73,000 high-quality photographs of major world events and personalities provides the academic community with access to a selection of Magnum's iconic images... (relating) to courses of study across the arts, humanities, social sciences, and beyond.
Magnum Photos International, Inc., is a cooperative founded just after World War II... from the belief that photographers must have a point of view in their imagery that transcends any formulaic recording of contemporary events.