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.

December 1943. Washington, D.C. "In the canteen for enlisted men at the United Nations Service Center on a Saturday night." Medium-format safety negative by Esther Bubley for the Office of War Information. View full size.

"December 1941. Enlisting in the Marines. Recruiting office, San Francisco." Nitrate negative by John Collier, Office of War Information. View full size.

Circa 1914. "U.S. Army camp kitchen." National Photo Co. View full size.

March 1943. "Henrietta, Missouri. Going through the town on the Atchison, Topeka, and Santa Fe Railroad between Marceline, Missouri, and Argentine, Kansas. The operator has just handed up a message." Medium-format nitrate negative by Jack Delano for the Office of War Information. View full size.

January 1941. "Window in home of unemployed steelworker. Ambridge, Pennsylvania." Medium-format negative by John Vachon. View full size.

"Arlington Beach." Circa 1925, the dance pavilion at the amusement park across the Potomac from Washington. National Photo glass negative. View full size.

Washington, D.C., circa 1920. "National Service Co. front, 1610 14th Street N.W." Home of 24-hour tire service. National Photo Co. glass negative. View full size.

July 1943. "Greenville, South Carolina. Air Service Command. A scene in one of the barracks. Enlisted man playing the flute after he has taken a shower." Photograph by Jack Delano for the Office of War Information. View full size.

"Dock Street, Philadelphia, circa 1908." Detroit Publishing Co. View full size.

New York, March 1943. "Times Square on a rainy day." Medium-format nitrate negative by John Vachon for the Office of War Information. View full size.