Washington, D.C., 1925. "Jerry Mangan and Ione Whalen, Wardman Park Pool." National Photo Company Collection glass negative. View full size.

March 1909. "One way to control the street boys. A common scene in the Bancroft-Foote Boys Club, New Haven, Connecticut." View full size. Photograph and caption by Lewis Wickes Hine.

October 1942. "Scrap and salvage depot. Butte, Montana." Where this kind of stuff ended up in the olden days, back before they invented eBay. View full size. 4x5 Kodachrome transparency by Russell Lee for the Office of War Information.

"People's Drug Store, Seventh and K Street N.W." A Washington, D.C., soda fountain circa 1921. National Photo Company glass negative. View full size.

"Wells Corset Shop, 1920." Unmentionables under glass at 1331 G Street N.W. in Washington. National Photo Company Collection glass negative. View full size.

Detroit, July 1942. "Looking east on Farnsworth Street with the Rackham Memorial Building at right and Detroit Institute of Art on the left." 4x5 Kodachrome transparency by Arthur Siegel. View full size.

Circa 1925. The title of this one is "Untitled" because the label fell off eons ago. National Photo Company Collection glass negative. View full size.

"Street scene, auto accident, 14th and Q." A second look at this Washington, D.C., car crash circa 1932. National Photo Co. safety film negative. View full size.

Detroit, July 1942. "Looking north on Woodward Avenue from the Maccabees Building with the Fisher Building at the distant left, and the Wardell Hotel at the right." 4x5 Kodachrome transparency by Arthur Siegel. View full size.

Washington, D.C. "Students, Eastern High School, 1941." Notes on the chalkboard mention both the school's newspaper, the Easterner, and its yearbook, "Punch and Judy." National Photo Company Collection safety film negative. View full size.

Washington circa 1932. "Street scene, auto accident," 14th and Q streets N.W. National Photo Company Collection safety film negative. View full size.

Silver Spring, Maryland. "Montgomery Blair High School girls, 1935." Archery, anyone? National Photo Company Collection safety negative. View full size.

"Rockville High School circa 1936." On the wall: "To swear is neither brave, polite, nor wise." National Photo Company Collection safety negative. View full size.

1920. "Autowreck, Sixth and H Streets NW." Tree meets T in Washington, D.C. National Photo Company Collection glass negative. View full size.

April 1936. "Dust storm. Note heavy metal signs blown out by wind. Amarillo, Texas." Medium format nitrate negative by Arthur Rothstein. View full size.