<human>:  What is the name of the famous photograph by Dorothea Lange?
<bot>: The name of the photograph is Migrant Mother. It is a photograph of a woman named Florence Owens Thompson, who was photographed in 1936 in California. She was a mother who had recently lost her husband to tuberculosis. Her two children were also very sick. She was living in a migrant camp and was waiting to be reunited with her husband. The photograph is famous because it shows a mother who is exhausted, yet still hopeful for the future.