Dorothea Lange (1895–1965) was a highly acclaimed social realist photographer who recorded one of the most important historical periods in American social history. In 1935, tired of studio portraiture, she began working for the Farm Security Administration (FSA), and created many of the images that define the Depression and the disastrous migration of farming families to the West in the popular imagination. This monograph is a concise introduction to her work, with an essay, 55 photographs and picture-by-picture commentaries.