21 powerful photos show what life inside a Japanese internment camp was like.

Dorothea Lange's work was hidden away for more than 60 years.

When the U.S. government hired photographer Dorothea Lange in 1942, she thought she'd be documenting history for the world to see.

After spending much of the 1930s snapping candid shots of Americans during the Great Depression, Lange was offered the chance to document Japanese-American internment camps during World War II.

While she was personally opposed to internment, Lange accepted the government's offer in hopes that her work would provide a valuable record of events for future generations.

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