Circa 1905. "Nassau Street, New York City." So, $3.50. By the hour? By the pound? Oh wait. Per pair. Detroit Publishing glass negative. View full size.

Washington, D.C., circa 1920. "7221 Blair Road." Someone's at the door. National Photo Company Collection glass negative. View full size.

February 1937. Calipatria, California. Native of Indiana in a migratory labor contractor's camp. "It's root hog or die for us folks." Large format negative by Dorothea Lange for the Resettlement Administration. View full size.

Sept. 18, 1961. New York. "Summit Hotel, 51st Street and Lexington Avenue. Exterior from northwest. Morris Lapidus, Harle & Liebman, architects." Hints of Cold War intrigue here. Gottscho-Schleisner photo. View full size.

May 1910. St. Louis, Missouri. "Burns Basement Branch. A dark dirty cellar, 3518 Evans Avenue." Newsies picking up their papers from the St. Louis Times news agent. Photo by Lewis Wickes Hine. View full size.

1939. "Service station in Washington, D.C." Continuing today's Essorama. 35mm nitrate negative by David Myers. View full size.

August 1938. "Picket line at the King Farm strike near Morrisville, Pennsylvania. Negro and white agricultural workers striking against an hourly wage of 17 to 20 cents." Medium format negative by John Vachon. View full size.

1936. "Mt. Holyoke, Mass. - Paragon Rubber Co. and American Character Doll. Pressing rubber bodies (French)." With "Old Sadie." Continuing our guys-and-dolls series. Large format negative by Lewis Hine. View full size.

July 1937. "Gas station in Washington, D.C." Ott's Esso Service, providing our second example in as many weeks of gas-station faux flora. Maybe this was a thing back then. Medium format negative by John Vachon. View full size.

Minneapolis circa 1908. "St. Anthony's Falls and the milling district." 8x10 inch dry plate glass negative, Detroit Publishing Company. View full size.

March 1937. Camden, New Jersey. "RCA Victor. Radio coil winder. If a girl has good fingers for this work, she can become expert on the job in three weeks. If she is not naturally deft, she never learns." Photo by Lewis Hine. View full size.

"Street, Washington, D.C., 1925." Who'll be the first to identify this wannabe skyscraper? [Answer: The Vermont Building, on Vermont Avenue at L Street.] National Photo Company Collection glass negative. View full size.

December 1941. Washington, D.C. "Diners in Washington Hot Shoppes restaurant." An exciting night of ice skating awaits, or has just concluded. Medium format nitrate negative by John Collier. View full size.

Coney Island, New York, circa 1905. "In Dreamland." Meet you over at Canals of Venice. 8x10 inch glass negative, Detroit Publishing Company. View full size.

August 1942. "Training in marksmanship helps girls at Roosevelt High School in Los Angeles develop into responsible women. Part of Victory Corps activities there, rifle practice encourages girls to be accurate in handling firearms. Practicing on the rifle range in the school's basement." Large format acetate negative by Alfred Palmer for the Office of War Information. View full size.