March 1943. "Topeka, Kansas. Eladio Tostado, steel car repairer's helper and rivet heater, at car shops of the Atchison, Topeka and Santa Fe." Medium-format negative by Jack Delano for the Office of War Information. View full size.

August 1911. Eastport, Maine. "Group of young cutters, Seacoast Canning Co., Factory #2, waiting for more fish. They all work, but they waste a great deal of time, as the adults do also, waiting for fish to arrive." Anyone up for a quick knife fight? Photograph and caption by Lewis Wickes Hine. View full size.

Washington, D.C., circa 1938. "Streamlined street car passing Washington Monument." Harris & Ewing Collection glass negative. View full size.

New York. June 6, 1944. ALLIED ARMIES LAND ON COAST OF FRANCE. GREAT INVASION OF CONTINENT BEGINS. "D-Day. Crowd watching the news line on the Times building at Times Square." Large-format nitrate negative by Howard Hollem or Edward Meyer, Office of War Information. View full size.

November 23, 1938. Washington, D.C. "Ford Motor Co., Union Station." For the 1939 model year, Ford debuted a new brand called Mercury. View full size.

April 13, 1938. Washington, D.C. "Goodyear blimp Enterprise at Washington Air Post." Harris & Ewing Collection glass negative. View full size.

Washington, D.C., circa 1939. Actually there is no caption for this photo. Who can ID these mystery men? Harris & Ewing Collection glass negative. View full size.
UPDATE: They're D.C. newspaper columnists Robert Kintner and Joe Alsop.