March 1943. "Barstow, California. Conductor David L. Webb sleeping in his caboose. He works on the Atchison, Topeka and Santa Fe Railroad out of San Bernardino." With what looks like another set of those railroad-safety posters. Photo by Jack Delano, Office of War Information. View full size.

March 1936. "Heavy black clouds of dust rising over the Texas Panhandle" — evidence of the forces that were driving thousands of farm families in Texas and Oklahoma to the West Coast in the great Dust Bowl migration chronicled in "The Grapes of Wrath." Medium format negative by Arthur Rothstein. View full size.

December 1913. "The whole force of workers in the cotton mills of Stevenson, Ala. Several of them are apparently under twelve, but could not get the ages. Photo posed by the general manager." Photo by Lewis Wickes Hine. View full size.

March 1943. "Barstow, California. General view of the Atchison, Topeka & Santa Fe yard." Photo by Jack Delano, Office of War Information. View full size.

Washington, D.C. "Red Cross baskets, Walter Reed Hospital, Christmas 1920." National Photo Company Collection glass negative. View full size.

March 1939. "House in Mexican section made of discarded airplane engine crates. San Antonio, Texas." Note feathered mascot. Medium-format nitrate negative by Russell Lee for the Resettlement Administration. View full size.

March 1943. "Barstow, California. A brakeman on the Atchison, Topeka and Santa Fe Railroad resting in his caboose at night." Pinup reading material includes: SLENDERIZE YOUR HIPS and SEX WAS MY RACKET. Medium-format safety negative by Jack Delano for the Office of War Information. View full size.