A welder at a boat-and-sub-building yard adjusts her goggles before resuming work, October, 1943. By 1945, women comprised well over a third of the civilian labor force (in 1940, it was closer to a quarter) and millions of those jobs were filled in factories: building bombers, manufacturing munitions, welding, drilling and riveting for the war effort. (Photo by Bernard Hoffma/Time & Life Pictures)
