Civilian defense. Who goes where and when is decided by the controller of the plotting board, who assigns radio equipped units to the trouble areas. Here he is receiving information from a telephone operator. This is a vital part of civilian defense work. The demonstration was at the October 1941 civilian defense show in Madison Square Garden, New York

Actual size of negative is C (approximately 4 x 5 inches).
Caption card lists some of the printing history of image.
Title and other information from caption card.
Transfer; United States. Office of War Information. Overseas Picture Division. Washington Division; 1944.
More information about the FSA/OWI Collection is available at http://hdl.loc.gov/loc.pnp/pp.fsaowi
Film copy on SIS roll 30, frame 650.