"1954 Fords -- Dearborn assembly plant final line." Watching the Fords go by in a variety of Easter egg hues. Color transparency from the Ford Motor Co. photo archive. View full size.

The Monongahela River circa 1909. "Duquesne Steel Plant, Carnegie Steel Co., Duquesne, Pennsylvania." 8x10 inch dry plate glass negative, Detroit Publishing Company. View full size.

July 1938. "Slums near steel mill. Pittsburgh, Pennsylvania." Medium format acetate negative by Arthur Rothstein for the Farm Security Administration. View full size.

July 1938. "Workers' homes with steel plant along Monongahela River in background. Clairton Duquesne, Pennsylvania." Medium format negative by Arthur Rothstein. View full size.

        A Shorpy salute to the nation's workers on Labor Day 2020 --

July 1938. "Steel worker at rolling mill. Pittsburgh, Pennsylvania." Medium format acetate negative by Arthur Rothstein for the Farm Security Administration. View full size.

June 1941. "Railroad yards. Carnegie-Illinois steel plant. Etna, Pennsylvania." Medium format acetate negative by John Vachon for the Farm Security Administration. View full size.

June 1941. "Jones and Laughlin steelworks. Pittsburgh, Pennsylvania." Medium format acetate negative by John Vachon for the Farm Security Administration. View full size.

June 1941. "Flag Day. Pittsburgh, Pennsylvania." Medium format acetate negative by John Vachon for the Farm Security Administration. View full size.

June 1941. "Railroad. Pittsburgh, Pennsylvania." Medium format acetate negative by John Vachon for the Farm Security Administration. View full size.

November 1938. "Railroad and coal yard, Omaha, Nebraska." Medium format acetate negative by John Vachon for the Farm Security Administration. View full size.

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.

Circa 1902. "Sulphite paper mill and old blockhouse. Sault Ste. Marie, Ontario." 8x10 inch dry plate glass negative, Detroit Photographic Company. View full size.

Hartford, Connecticut, circa 1906. "Colt's Armory." Samuel Colt's historic firearms factory on the banks of the Connecticut River. 8x10 inch glass negative. View full size.

July 1941. "Heads of beef cattle. Hormel meat-packing plant, Austin, Minnesota." Medium format acetate negative by John Vachon for the Farm Security Administration. View full size.

July 1941. "Packing butter cut into squares for use in restaurants. Land O'Lakes plant, Minneapolis, Minnesota." Acetate negative by John Vachon. View full size.