Dorothea Lange was one of the greatest photographers of the 20th century who is known for her photos documenting the Great Depression. She was born in the late 1800s and became a portrait photographer in San Francisco in the early 1900s. During the 1930s, Lange worked for the Farm Security Administration and took iconic photos depicting the struggles of migrant workers and farmers during the Great Depression, including her most famous work "Migrant Mother". Later in life, Lange continued photographing and collaborated with Ansel Adams, helping establish the photo magazine Aperture. She died of cancer in 1965 but left behind a legacy as one of the most influential photographers of the 20th century.