Photo shows Florence Thompson with several of her children in a tent shelter as part of the "Migrant Mother" series. For background information, see "Dorothea Lange's MĚ€igrant Mother' photographs ..." http://www.loc.gov/rr/print/list/128_migm.html
"This family of 7 were camped on a flat during the potato harvest, without tent, without water. Water from nearby service station at 5 cents per bucket."