Portrait shows Florence Thompson with several of her children in a photograph known as "Migrant Mother". The Library of Congress caption reads: "Destitute pea pickers in California. Mother of seven children. Age thirty-two. Nipomo, California." In the 1930s, the FSA employed several photographers to document the effects of the Great Depression on the population of America. Many of the photographs can also be seen as propaganda images to support the U.S. government's policy distributing support to the worst affected, poorer areas of the country. Lange's image of a supposed migrant pea picker, Florence Owens Thompson, and her family has become an icon of resilience in the face of adversity. However, it is not universally accepted that Florence Thompson was a migrant pea picker. In the book Photographing Farmworkers in California (Stanford University Press, 2004), author Richard Steven Street asserts that some scholars believe Lange's description of the print was "either vague or demonstrably inaccurate" and that Thompson was not a farmworker, but a Dust Bowl migrant. Nevertheless, if she was a "Dust Bowl migrant", she would have left a farm as most potential Dust Bowl migrants typically did and then began her life as such. Thus any potential inaccuracy is virtually irrelevant. The child to the viewer's right was Thompson's daughter, Katherine (later Katherine McIntosh), 4 years old (Leonard, Tom, "Woman whose plight defined Great Depression warns tragedy will happen again ", article, The Daily Telegraph, December 4, 2008) Lange took this photograph with a Graflex camera on large format (4"x5") negative film.