Dorothea Lange, Resettlement Administration photographer, in California atop car with her giant camera. February 1936. View full size.

Fourth of July 1939 near Chapel Hill, North Carolina. "Rural filling stations become community centers and general loafing grounds. Cedargrove Team members about to play in a baseball game." Medium-format nitrate negative by Dorothea Lange. View full size.

June 1938. Caddo, Oklahoma. Migrants leave the small towns as well as the farms of the southwest. This region is a source of many emigrants to the Pacific Coast. View full size. Photograph by Dorothea Lange.

July 1939. Tenant farmer in Chatham County, North Carolina. View full size. Farm Security Administration photograph by Dorothea Lange.

April 1939. Farm Security Administration migrant camp at Westley, California. Migrant mother with sick baby and agricultural workers medical association card. View full size. Photograph by Dorothea Lange.

Leland, Mississippi. June 1937. View full size. Photograph by Dorothea Lange.

October 1939. Farm Security Administration camp unit at Merrill, Oregon. The camp nurse introduces doctor to mother of sick baby. View full size.

July 1936. Peach picker in Musella, Georgia. Earns 75 cents a day. View full size. Photograph by Dorothea Lange.

August 1939. Yakima Valley, Washington. Shacktown community, mostly families from Kansas and Missouri. This family has five children, oldest in third grade. Rent $7 per month, no plumbing. Husband earns Work Projects Administration wages, $44 per month. View full size. Photograph by Dorothea Lange.

July 1939. Women of the congregation of Wheeler's Church on steps with brooms and buckets on annual clean up day. Gordonton, North Carolina. View full size.

July 1939. Farm boy in the doorway of a tobacco barn. Person County, North Carolina. View full size. Photograph by Dorothea Lange.

August 1939. Three of the four Arnold children outside their farmhouse at Michigan Hill. The oldest boy earned the money to buy his bicycle. Thurston County, western Washington. View full size. Photograph by Dorothea Lange.

July 1939, Person County, North Carolina. Wife and child of tobacco sharecropper. The littlest girl comes in from outside for something to eat while Mother is doing her housework. The child next to the baby is called in this country the "knee baby." View full size. Photograph by Dorothea Lange.

August 1939. Migratory children living in "Ramblers Park." They have lived on the road for three years. Nine children in the family. Yakima Valley, Washington. View full size. Photograph by Dorothea Lange.

Coldwater District north of Dalhart, Texas. This house is occupied; most of the houses here have been abandoned. View full size. Photo by Dorothea Lange.