Washington, D.C., circa 1918. "Food Administration: Making sauerkraut." National Photo Company Collection glass negative. View full size.

"Mack Sennett Girl," circa 1919. Actress Marvel Rea, one of film producer Mack Sennett's well-rounded "bathing girls," in somewhat moldy National Photo glass negative. From a series of pictures using cars and tires as props. View full size.

Washington circa 1918. "Food Administration cafeteria." The lima bean soup looks delicious. National Photo Co. Collection glass negative. View full size.

Circa 1918. "Food Administration home economics demonstration rail car, University of Illinois." National Photo Co. glass negative. View full size.

"Union Barber Supply, washing machine, circa 1920." A look at the innards of the contraption posted yesterday -- a laundry tub with electric motor attached to a rotating wood drum in one compartment for washing, and a wringer on the other side for drying. National Photo Co. Collection glass negative. View full size.

May 5, 1923. "George Marshall, dean of taxidermists at the National Museum, with some of the historic White House trophies which he is at present renovating." National Photo Company Collection glass negative. View full size.

"Two women in kitchen. May 8, 1923." Not just any old kitchen, this is the laboratory where Odessa Dow conducted her ground-breaking baking research. National Photo Company Collection glass negative. View full size.

"Greene statue circa 1918." Henry Kirke Brown's bronze of the Revolutionary War hero Nathanael Greene, in a Washington, D.C., park or square whose name we can't quite remember. National Photo Company glass negative. View full size.