1. Migrant Farm Families photographs by Dorothea Lange Dorothea Lange (1895-1965) has been called the greatest American documentary photographer. She is best known for her chronicles of the Great Depression and for her photographs of migratory farm workers. Below are 24 pre-World War II photographs, taken for the U.S. Farm Security Administration (FSA), investigating living conditions of families hired to work in cotton fields and farms in Arizona and California. Many of the families had fled the Dust Bowl, the lengthy drought which devastated millions of acres of farmland in Midwestern states such as Oklahoma.

2. Her most famous…