Identification on verso (handwritten and stamped): Please credit Photograph to W.P.A. Federal Art Project; 6 East 39th St. New York, N.Y. Negative No.: SF-113; Title: Evolution of Communications in American Wars; Artist: Letterio Calapai, 101st Signal Battalion, 801 Dean St., Brooklyn.
Archives of American Art, Smithsonian Institution Washington, D.C. 20560