Dorothea Lange (1895–1965), a celebrated social realist photographer, is known for documenting critical moments in American history. In 1935, she joined the Farm Security Administration (FSA) after leaving studio portraiture, capturing iconic images of the Great Depression and the migration of farming families to the West. This monograph offers a concise introduction to Lange's impactful work, featuring an essay, 55 photographs, and detailed commentaries on each image. It explores themes of economic hardship and displacement, emphasizing Lange's role in shaping the visual narrative of this era in American social history.