Washington circa 1926. "J.C. Flood truck. Ford Motor Co." The J.C. Flood Plumbing business is still going strong in the Washington area. National Photo Company Collection glass negative. View full size.

"Union Barber Supply washing machine circa 1920." All I can say here is watch your fingers. National Photo Company Collection glass negative. View full size.

Another view of the circa 1920 kitchen from the previous post. The complicated-looking range-and-boiler combination seems to have been popular at the time. National Photo Company Collection glass negative. View full size.

New construction with the latest in kitchens in the Washington, D.C., area circa 1920. National Photo Company Collection glass negative. View full size.

Washington, August 18, 1924. "Miss V.P. Porter, Bureau of Standards." National Photo Company Collection glass negative, Library of Congress. View full size.

Washington circa 1930. "Franklin School building exterior, 13th Street N.W." National Photo Company Collection safety film negative. View full size.

December 22, 1924. "J.E. Hoover, Bureau of Investigation, Department of Justice." A young J. Edgar Hoover, age 29, director of the government agency that we know today as the FBI. National Photo glass negative. View full size.

November 1909. The 25th annual National Horse Show at Madison Square Garden in New York, in one of those ultra-detailed yet otherworldly views so characteristic of large-format glass negatives (8x10 inches here). View full size.