Washington, D.C., circa 1920. "Union Station, tracks in rear." National Photo Company Collection glass negative, Library of Congress. View full size.

"Herr Dump Car Mfg. Co., 1925." A new sidewalk in Washington, or the capital's Maryland suburbs. View full size. National Photo Company glass negative.

July 1967, Kings Canyon National Park, California. My mother, brother and father around the campfire, photographed in Kodachrome by the light of a Coleman lantern. Bonus: antique enameled coffeepot. View full size.

Washington, D.C., 1923. "W.B. Moses & Sons, F and 11th Sts." Note the unusual circular windows at the top of the building. National Photo Co. View full size.

Washington, D.C. "Penn Oil and truck." A relic of the Carboniferous Age circa 1920. National Photo Company Collection glass negative. View full size.

"Holmes Bakery, Ford truck, 1923." Another cog in the Holmes pastry-delivery machine. View full size. National Photo Company Collection glass negative.

"Nancy Hamilton, 9/9/26." View full size. National Photo Co. glass negative.

August 15, 1955. My ninth birthday. In answer to my request, we had turkey with all the trimmings. I'm pretending to carve. The camera this was taken with was probably a birthday present, thereby starting me on my road to photographic immortality. Poetic justice that the shot's out of focus. Gobble gobble.

District of Columbia, 1919. Willard Service Station, Washington Battery Co., 1623 L Street. The sign: "We respectfully request customers to refrain from talking to workmen. Any information desired will be cheerfully given out by floor superintendent." National Photo Company glass negative. View full size.

Washington circa 1920. "Penn Oil Co., Massachusetts Avenue & Wisconsin Avenue station." National Photo Company glass negative. View full size.

Washington, D.C., circa 1920. "Hudson, stolen car." View full size. National Photo Company Collection glass negative, Library of Congress.

1928 or 1929. Production workers at the huge Atwater Kent radio factory in Philadelphia. View full size. National Photo Company Collection glass negative.

March 20, 1923. "H.A. Bolles, Annapolis. Crew Captain." View full size. National Photo Company Collection glass negative, Library of Congress.

1920. "William Downer Auto Home, Gospel Car No. 1." The Reverend hailed from Glassboro, New Jersey. National Photo Company glass negative. View full size.

May 1864. "Fredericksburg, Va. Soldiers filling canteens." Photographs from the main Eastern theater of war, Grant's Wilderness Campaign, May-June 1864. Wet plate glass negative, half of stereo pair, photographer unknown. View full size.