We all know Dorothea Lange's iconic photos--the "Migrant Mother" holding her child, the gaunt men forlornly waiting in breadlines--but few know the arc of her extraordinary life. In this sweeping account, renowned historian Linda Gordon charts Lange's journey from polio-ridden child to wife and mother, to San Francisco portrait photographer, to chronicler of the Great Depression and World War II. Gordon uses Lange's life to anchor a moving social...