September 1942. "Learning how to determine latitude by using a sextant is Senta Osoling, student at Polytechnic High School, Los Angeles. Navigation classes are part of the school's program for training its students for specific contributions to the war effort." View full size. 4x5 Kodachrome transparency by Alfred Palmer.

Washington, 1919 or 1920. "Brewer, Taylor, Gram dancing at Wilson Normal." View full size. National Photo Company Collection glass negative.

"Thomas R. Shipp Co. Atwater Kent window. Woodward & Lothrop." Department store window display of Atwater Kent radio equipment circa 1928 in Washington, D.C. National Photo Company Collection glass negative. View full size.

Washington, D.C. "Jordan Piano Co." 15th and F Streets NW at the Treasury building. The LOC date range here is "1920 or 1921." Who can date the Saturday Evening Post cover? National Photo Company glass negative. View full size.

Washington, D.C., circa 1926. "Minute Service Station, Georgia Avenue N.W." View full size. National Photo Company Collection glass negative.

1942. "Road out of Romney, West Virginia." 35mm color transparency by John Vachon for the Office of War Information. View full size.

April 1909. Fiskeville, Rhode Island. "John Dempsey. Looked 11 or 12 years old. Said he helped only on Saturdays. Jackson Mill, one of the B.B. and R. Knight mills. He was working faithfully in the mule-spinning room, a dangerous place for boys." Photograph and caption by Lewis Wickes Hine. View full size.