A highschool in New York city, 1942. Students devoted one day a week of their English class to "war activities." Here they're learning/practicing first aid.
Photo by William Perlitch. [American Memory link]
Showcasing some of the 160,000 images taken between 1935 and 1944 by government-hired photographers. (If you were to look at 100 of them per day, every day, you'd need more than four years to view them all).