US U: 1942 June 1942. "Edgewood Arsenal, Maryland. Gas demonstration. Gas masks ('Universal' size) reconditioned for civilian defense use at the gas mask factory." Medium format acetate negative by Jack Delano for the Office of War Information.

US U: 1942 June 1942. "Edgewood Arsenal, Maryland. Gas demonstration. Gas masks ('Universal' size) reconditioned for civilian defense use at the gas mask factory." Medium format acetate negative by Jack Delano for the Office of War Information.