December 1942. "Chicago, Illinois. Locomotive over the ash pit at the roundhouse at a Chicago & North Western railyard." Photo by Jack Delano, Office of War Information. View full size.

December 1942. "Chicago, Illinois. Icing a refrigerator car in the freight house at a Chicago & North Western railyard." Photo by Jack Delano for the Office of War Information. View full size.

October 1942. "Tulsa, Oklahoma. Loading rack at the Mid-Continent refinery, Tulsa station of the Great Lakes pipeline." Photo by John Vachon, Office of War Information. View full size.

May 9, 1913. "Detroit City Gas Company, north end of gas holder." (Some assembly required.) 8x10 inch dry plate glass negative, Detroit Publishing Company. View full size.

Circa 1900. "Château Frontenac & Dufferin Terrace, Quebec City." This majestic hotel, constructed by the Canadian Pacific Railway on a bluff overlooking the St. Lawrence River, opened in 1893. 8x10 inch glass negative, Detroit Photographic Company. View full size.

February 1943. "Chicago, Illinois. One of the Pennsylvania Railroad's giant '6100' class [T1 prototype] engines pulling out of Union Station on the 'Manhattan Limited' run." Medium format acetate negative by Jack Delano for the Office of War Information. View full size.

February 1943. "Chicago, Illinois. In the interlocking tower at Union Station. It is here that all inbound and outbound traffic is controlled. The men work entirely by the board, hardly ever looking out of a window to see an actual train." Acetate negative by Jack Delano for the Office of War Information. View full size.

March 1943. "Chicago, Illinois. Switchmen riding one of the Atchison, Topeka and Santa Fe diesel switch engines." Photo by Jack Delano for the Office of War Information. View full size.

June 1943. "New Britain, Connecticut, is home to many essential war industries. A woman railroad crossing watcher letting down the gates until the train passes." 4x5 inch acetate negative by Gordon Parks for the Office of War Information. View full size.

April 1943. "San Augustine, Texas. Story of a small town. The waiting room in the railroad station." Acetate negative by John Vachon for the Office of War Information. View full size.

January 1943. "Icing platform of the Indiana Harbor Belt Railroad. Blue Island Yard south of Chicago." Acetate negative by Jack Delano for the Office of War Information. View full size.

May 1943. "Beaumont, Texas. Wartime occupational replacement by women in men's traditional jobs. Lady in signal tower who operates block signals for railroad crossing." Medium format acetate negative by John Vachon for the Office of War Information. View full size.

January 1943. Riverdale, Illinois. "Blue Island Yard of the Indiana Harbor Belt Railroad with view of the icing platform." Photo by Jack Delano, Office of War Information. View full size.

January 1943. Riverdale, Illinois. "Freight operations of the Indiana Harbor Belt Railroad. Grain elevator and mill at a siding of the Harbor Belt's Blue Island Yard south of Chicago." Medium format acetate negative by Jack Delano for the Office of War Information. View full size.

January 1943. "Nelson, Illinois. Chicago and North Western Railroad freight en route from Clinton, Iowa, to Chicago. Stopping for coal and water to give passenger trains the right of way." Acetate negative by Jack Delano for the Office of War Information. View full size.