April 1943. Proviso Yards of the Chicago & North Western Railroad. Joseph Klesken washing up after a day's work on the rip tracks. View full size. 4x5 Kodachrome transparency by Jack Delano for the Office of War Information.

January 1941. Lowell, Mass. "Commuters who have just come off the train, waiting for the bus to go home." 35mm Kodachrome by Jack Delano. View full size.

April 1943. "Chicago & North Western R.R. Tracks leading into the freight house at Proviso yard. This is said to be the largest covered freight house in the world." View full size. 4x5 Kodachrome transparency by Jack Delano for the OWI.

May 1943. Pennsylvania R.R. iron ore docks, Cleveland. "After the ore is weighed in the Hulett unloader it is dropped in the waiting hopper cars below." 4x5 Kodachrome transparency by Jack Delano for the OWI. View full size.

January 1943. Calumet City, Illinois. Indiana Harbor Belt Railroad switchman demonstrating signal with a fusee, used at twilight and dawn, when visibility is poor. This signal means "go ahead." View full size. Caption and 4x5 Kodachrome transparency by Jack Delano for the Office of War Information.

May 1943. Bensenville, Illinois. Section crew of the Chicago, Milwaukee, St. Paul and Pacific Railroad taking up track. View full size. 4x5 Kodachrome transparency by Jack Delano for the Office of War Information.

January 1943. "Indiana Harbor Belt R.R. switchman demonstrating signal with a fusee, used at twilight and dawn when visibility is poor. This signal means stop." Calumet City, Ill. 4x5 Kodachrome transparency by Jack Delano. View full size.

December 1942. "Chicago, Illinois. Work goes on twenty-four hours a day at this Chicago and North Western Railroad yard." View full size. Medium format negative by Jack Delano for the Office of War Information.

December 1942. Boxcars being refurbished. "Regular tracks of the South Yards of the Chicago & North Western R.R. Proviso Yard." View full size. 4x5 Kodachrome transparency by Jack Delano for the Office of War Information.

August 1941. Cars in the business district of Brattleboro, Vermont. 35mm nitrate negative by Jack Delano for the Farm Security Administration. View full size.

April 1943. South Water Street freight depot of the Illinois Central Railroad at Chicago. View full size. 4x5 Kodachrome transparency by Jack Delano.

Santa Fe R.R. trip, March 1943. Section house along the Atchison, Topeka & Santa Fe Railroad in the vicinity of Encino, New Mexico. View full size. 4x5 Kodachrome transparency by Jack Delano for the Office of War Information.

March 1943. Santa Fe trip from Chicago to California. Trains on the Santa Fe tracks through Cajon Pass in the San Bernardino Mountains. View full size. 4x5 Kodachrome transparency by Jack Delano for the Office of War Information.

March 1941. Traffic on the main street of Fayetteville, North Carolina, at about 5 o'clock, when the workers start coming out of Fort Bragg. View from the "old marketplace." View full size. Medium-format safety negative by Jack Delano.

May 1941. Music-making in the convict camp at Greene County, Georgia. Medium-format nitrate negative by Jack Delano. View full size. The guitarist, one Shorpy reader points out, is bluesman Buddy Moss.