January 1939. "Dr. Springs' office. Colp, Illinois." Medium format acetate negative by Arthur Rothstein for the Farm Security Administration. View full size.

January 1939. "Post office. Colp, Williamson County, Illinois." Medium format acetate negative by Arthur Rothstein for the Farm Security Administration. View full size.

January 1943. "Daytona Beach, Florida. Bethune-Cookman College. Girl welder in the National Youth Administration school." Photo by Gordon Parks, Office of War Information. View full size.

July 1941. "Sacked wheat being stored in warehouse. Touchet, Walla Walla County, Washington." Photo by Russell Lee for the Farm Security Administration. View full size.

July 1941. "Port Kelley, where wheat belonging to members of the Walla Walla Grain Growers is stored and shipped by barge to Portland. Walla Walla County, Washington." Medium format acetate negative by Russell Lee for the Farm Security Administration. View full size.

July 1942. Washington, D.C. "Publicity photographer and model at the municipal swimming pool on Sunday." Nitrate negative by Marjory Collins, Office of War Information. View full size.

April 1941. "Old brownstone houses now occupied by Negroes in Chicago, Illinois." Medium format acetate negative by Russell Lee for the Farm Security Administration. View full size.

July 1942. Washington, D.C. "Sunday at the municipal swimming pool." Medium format nitrate negative by Marjory Collins for the Office of War Information. View full size.

July 1942. Washington, D.C. "Sunday at the edge of the municipal swimming pool." Medium format nitrate negative by Marjory Collins for the Office of War Information. View full size.

July 4, 1941. Vale, Oregon. "One of the floats in the Fourth of July parade." Medium format acetate negative by Russell Lee for the Farm Security Administration. View full size.

January 1941. "Going to Mass. Pittsburgh, Pennsylvania." Medium format acetate negative by John Vachon for the Farm Security Administration. View full size.

February 15, 1950. "N.Y. Telephone Co. headquarters and the World-Telegram building, from a helicopter." Photo by Al Ravenna for the New York World-Telegram & Sun. View full size.

Washington, D.C., 1936. "Bus transportation -- driver of Greyhound coach to New York." Seen earlier here. 4x5 inch glass negative, Harris & Ewing Collection. View full size.

"Abraham Lincoln, presidential candidate, half-length portrait, facing right." Circa 1881 albumen silver print from a glass negative by Alexander Hesler. View full size.

        Photo of Lincoln made from a negative taken in Springfield, Illinois, by Alexander Hesler on June 3, 1860. "Wrote Lincoln's law partner, William H. Herndon, 'There is the peculiar curve of the lower lip, the lone mole on the right cheek, and a pose of the head so essentially Lincolnian; no other artist has ever caught it.' "

Washington, D.C., circa 1918. "Liberty Loan bonds -- Bureau of Engraving and Printing." Financing the war effort. 8x10 inch glass negative, Harris & Ewing Collection. View full size.