Runner-up, National Council on Public History Book Award, 2008 The 1930s exodus of "Okies" dispossessed by repeated droughts and failed crop prices was a relatively brief interlude in the history of migrant agricultural labor. Yet it attracted wide attention through the publication of John Steinbeck's The Grapes of Wrath (1939) and the images of Farm Security Administration photographers such as Dorothea Lange and Arthur Rothstein...