At seventeen, Dorothea Lange knew she would be a photographer--even though she had never taken a picture. She had grown up observing the life of the poor people in the street with an artist's keen eye. As a young photographer, Dorothea focused that eye on the hungry and homeless people of the Great Depression. She traveled across the country, documenting their struggles. Today her pictured are treasured not only as works of art, but as testaments to human strength.