Over 3,800 Dorothea Lange photographs of the Great Depression.
An internet connection is required.
Dorothea Lange was perhaps the best-known photographer working for the Farm Security Administration (FSA) from about 1933 to 1939, mostly because of her iconic photograph Migrant Mother (see screenshots). But she did a lot of other fine work, too.
This app shows essentially all of the digitized Dorothea Lange photographs in the Library of Congress archive, over 3,800 photographs in all. Each has the Library of Congress caption and date.
You can view the photos in a grid (with full captions), full-screen, or as a slideshow. You can also save order prints.
While all of these images can also be accessed on the LoC site, this app presents them in a much more convenient and organized way.