July 19, 1939. "New York World's Fair, railroad exhibit locomotives. Locomotive of Tomorrow, general view." Up next: The Caboose of Next Wednesday. Large-format acetate negative by Gottscho-Schleisner. View full size.

San Francisco, 1920. "Atterbury truck at City Hall." Looking somewhat skeletal if you ask us. 5x7 glass negative by Christopher Helin. View full size.

Nov. 12, 1950. "John D. Rockefeller III, residence at 252 E. 52nd Street, New York City. Living room to fireplace with model." Note the Giacometti "Pointing Man." Large-format acetate negative by Gottscho-Schleisner. View full size.

Washington, D.C., circa 1925. "Rear view of Potomac Electric Power Co. Benning plant." 8x10 safety negative by Theodor Horydczak. View full size.

Florida circa 1897. "Sidewheeler City of Jacksonville at Beresford on the St. Johns." 8x10 inch glass negative by William Henry Jackson. View full size.

August 25, 1949. "New York International Airport, Idlewild. Bridge with plane." A Boeing 377 Stratocruiser, the Pan Am Clipper Seven Seas. Large-format acetate negative by Gottscho-Schleisner. View full size.

My grandfather took over the old family grocery in Honey Grove, Pa., in 1950 and opened his funeral home adjacent. He ran the store until around 1970, when competition from chain grocers finally got the best of the place. View full size.

San Francisco, 1928. "Franklin Sport Touring at Golden Gate Park." Latest entry in the Shorpy Pantheon of Forgotten Phaetons. 5x7 glass negative. View full size.

June 12, 1939. "New York World's Fair -- House of Glass. Living room." Large-format acetate negative by Gottscho-Schleisner. View full size.

March 10, 1948. Washington, D.C. "Griffith Consumers Co. -- Exterior of Dumont Television WTTG, 12th Street." Photo by Theodor Horydczak. View full size.

November 1942. "Chicago, Illinois. Washing a locomotive at the coaling station at an Illinois Central railyard." Triple Foam and Rain-X, $3 extra. Medium format negative by Jack Delano for the Office of War Information. View full size.

New York circa 1900. "Mess boys, Brooklyn Navy Yard Hospital." 8x10 inch dry plate glass negative, Detroit Publishing Company. View full size.

My grandfather documented the last day in session for my mother's one-room school in Honey Grove, Pennsylvania, in 1958. View full size.

January 1941. "Guests of Sarasota, Fla., trailer park enjoying the sun and sea breeze at the beach." Photo by Marion Post Wolcott. View full size.

San Francisco, 1924. "Lady greasing Oldsmobile sedan." A pioneer of Women's Lubrication. 5x7 glass negative by Christopher Helin. View full size.