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Oklahoma, 1938 - An itinerant worker, traveling by foot, looking for work in mines, lumber camps, or farms.

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California, 1940 - Cheap auto camp housing for citrus workers.

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California, 1940 - A former Missouri farmer and his wife, now working as farm laborers, pause on the road in California.

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Oklahoma, 1938 - A family in Pittsburg County is forced to leave their home due to a serious drought in the region.

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Texas, 1935 - An unemployed and destitute man leaning against a vacant store in Garfield.

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California, 1938 - A couple of tenant purchase applicants sitting outside the US Department of Agriculture's Farm Security Administration (FSA) office.

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California, 1939 - A migrant, proud of his appearance, shaving by the roadside.

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Oklahoma, 1936 - Elderly farmers sitting in the shade while their crops burn in nearby fields.

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California, 1935 - A group of farm laborers cutting lettuce in Salinas.

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California, 1936 - A family of migrant workers flee from the drought in Oklahoma before camping by the roadside near the town of Blythe.

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Oklahoma, 1936 - A young, malnourished girl living in a shack town near Oklahoma City.

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California, 1939 - A line of men inside the state employment service office in San Francisco.

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Texas, 1938 - The wife of a migratory laborer lost in her thoughts.

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California, 1938 - A family of drought refugees from Abilene, TX, on the road in California, where they are trying to find work.

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California, 1938 - Two men walking towards Los Angeles, and hopefully a better future.

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Idaho, 1937 - A Mennonite farmer in Boundary County rests during logging.

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California, 1936 - A real estate office in Oakland. A new, 2-bedroom home for $3,850 is among the properties listed for sale.

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California, 1936 - Frances Owens Thompson, a migrant mother with three of her seven children at a farm workers' camp in Nipomo. This image, called "Migrant Mother", defined the Great Depression and remains Lange's most celebrated photograph.

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South Carolina, 1939 - A barefooted sharecropper rests near the town of Chesnee.

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Arkansas, 1938 - Men and mules cultivating cotton at the Lake Dick Cooperative Association farm.

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California, 1936 - Reasonably nourished, a mother manages a smile as she holds her baby.

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California, 1933 - A man, hands clenched with worry, waiting at a breadline in San Francisco during the winter.

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Georgia, 1934 - An elderly man bent over a turpentine still near Valdosta.

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California, 1939 - Dust Bowl migrants motor along the highway between Imperial Valley and the San Joaquin Valley on the Tehachapi Ridge.

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North Carolina, 1939 - A sparsely decorated kitchen in the home of a tobacco sharecropper, replete with a cast iron cooking stove, wash basin, and a butter churn.

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California, 1936 - Her face etched with desperation, the daughter of an unemployed Tennessee coal miner sits in a California migrant workers' camp near Sacramento.

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Mississippi, 1937 - A 13-year-old African-American sharecropper boy plowing a dry, rain-starved field.

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North Carolina, 1935 - A group of men sitting out on the porch of a country store on a dirt road in Gordonton.

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California, 1937 -

An ex-tenant farmer surviving on a relief grant pictured with colleagues in Imperial Valley.

See also: The worst financial crises the world has ever seen

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