March 22, 1940. New York. "Rear of #68 and #70 Greenwich Street showing dormers and stable ell back of #73 Washington Street at left. Houses built circa 1825." 5x7 inch acetate negative by Stanley P. Mixon for the Historic American Buildings Survey. View full size.

September 7, 1940. New York. "Greenwich Street Study (plot plan). Looking south along west side of Greenwich Street toward Battery over elevated structure (demolished Fall)." 5x7 inch acetate negative by Stanley P. Mixon for the Historic American Buildings Survey. View full size.

January 1942. "Fort Worth, Texas. Meacham Field. Civilian pilot training. Students learning about wing construction." Acetate negative by Arthur Rothstein. View full size.

April 1941. "House and children in Negro section (South Side) of Chicago, Illinois." Medium format acetate negative by Russell Lee for the Farm Security Administration. View full size.

April 1941. "Sign. Chicago, Illinois. (Children in the 'Black Belt,' Negro section on the South Side.)" Acetate negative by Russell Lee for the Farm Security Administration. View full size.

January 1942. Fort Worth, Texas. "Meacham Field. Civilian pilot training school. Instructor and students, control tower in background." Acetate negative by Arthur Rothstein. View full size.

January 1942. Fort Worth, Texas. "Meacham Field. Students working on plane motor at civilian pilot training school." Photo by Arthur Rothstein, Office of War Information. View full size.

1902. "Characteristic employees' home, National Cash Register, Dayton, O." Along with two characteristic employees. 8x10 inch glass negative by William Henry Jackson. View full size.

February 1936. "Mexican quarter of Los Angeles. One-quarter mile from City Hall. Area has been condemned and will be torn down shortly to make space for the new Union Railroad station. Average rent is eight dollars." 4x5 inch nitrate negative by Dorothea Lange for the Resettlement Administration. View full size.

February 1936. "Mexican quarter of Los Angeles. One-quarter mile from the City Hall. Average rent eight dollars monthly. Area has been condemned and will be torn down shortly." 4x5 inch nitrate negative by Dorothea Lange for the Resettlement Administration. View full size.

June 1942. "Anacostia, D.C. -- Frederick Douglass housing project. Boy at the playground." 4x5 inch acetate negative by Gordon Parks for the Farm Security Administration. View full size.

February 1936. "Mexican quarter of Los Angeles, California. Houses condemned to make space for the new Union Station. Average rental eight dollars. Some houses have plumbing." 4x5 nitrate negative by Dorothea Lange for the Resettlement Administration. View full size.

"Perisphere and ramp at 1939 New York Word's Fair." Corpulent counterpoint to the trimmer Trylon. Uncredited acetate transparency, possibly by Gottscho-Schleisner. View full size.

Alexandria, Virginia, circa 1910. "Braddock House." The Hotel Braddock -- Rooms 25 and 50 cents. 8x10 inch dry plate glass negative, Detroit Publishing Company. View full size.

Portsmouth, Virginia, circa 1905. "Confederate monument, Court Street." 8x10 inch dry plate glass negative, Detroit Publishing Company. View full size.