Subsistence Homesteads Division of the Department of the Interior; its successor, the Resettlement Administration, whose express purpose was to help the poor in rural areas; and its replacement, the Farm Security Administration which aimed to break the cycle of tenant farming and sharecropping and help poor whites and blacks to own their own farms, and to initiate the creation of the communities necessary to support those farms. The agencies also provided services for migrant workers, such as the Arkies and Okies, who had been devastated by the Dust Bowl – the condition of which was well-documented by photographer Dorothea Lange in An American Exodus (1939) – and been forced to take to the road, jamming all their belongings into Ford motorcars and heading west toward California. Important in the devising and running of these programs were politicians and bureaucrats such as Henry Wallace, the Secretary of Agriculture; Milburn Lincoln Wilson, the first head of the Subsistence Homesteads Division, who was a social scientist and an agricultural expert; and Rexford G. Tugwell, a Columbia University economics professor who managed to be appointed the first head of the Resettlement Agency, despite refusing to present himself with a "homely, democratic manner" in his confirmation hearings. Tugwell understood that the status of tenant farmers would not change if they could not vote, so he campaigned against poll tax, which prevented them voting, since they could not afford to pay it. His agency's goals were the four "R's": "retirement of bad land, relocation of rural poor, resettlement of the unemployed in suburban communities, and rehabilitation of farm families." Other individuals important in the fight to help the rural poor were Arthur Raper, an expert on tenancy farming, whose study Preface to Peasantry (1936) explained why the south's system held back the region's poor and caused them to migrate; and Howard Odum, a University of North Carolina sociologist and psychologist who founded the journal Social Forces, and worked closely with the Federal government. Odum wrote the 600-page masterwork Southern Regions of the United States, which became a guidebook for the New Deal. Journalist Gerald W. Johnson translated Odum's ideas in the book into a popular volume, The Wasted Land. It was Odum who, in 1938, mailed questionnaires to academics to determine their views on what "poor white" meant to them. The results were in many ways indistinguishable from the popular views of "white trash" that had