Dorothea Lange's First Photo of Early Dust Bowl Migrants | Grab a Hunk of Lightning 

Photographer Dorothea Lange and her husband were among the first to witness and to understand the causes of the huge migration to California in the 1930s: families were escaping the Dust Bowl. In this film excerpt, Lange talks about the first car she photographed before the country realized what was happening. American Masters' Dorothea Lange: Grab a Hunk of Lightning premieres Fri., Aug. 29, 9-11 pm on PBS.