What Kendrick Clements has called "managed voluntarism and controlled decentralization," the notion that expert-designed programs should be "administered as much as possible by the people most affected by them," had been a hallmark of Herbert Hoover's approach to conservation during his time in federal service; as the conservation effort expanded to private lands, this strategy held great appear to his presidential successor. Clements, Hoover, Conservation and Consumerism; John Babcock, "The Role of Public Discourse in the Soil Conservation Movement, 1865-1935" (PhD dissertation, University of Michigan, 1985); John Sears, "Grassroots Democracy: FDR and the Land," in Henry L. Henderson and David B. Woolner, eds., FDR and the Environment (New York: Palgrave Macmillan, 2005); Carroll Pursell, ed., From Conservation to Ecology (New York: Crowell, 1973); Brian Black, "Referendum on Planning: Imagining River Conservation in the 1938 TVA Hearings," in Henry L. Henderson and David B. Woolner, eds., FDR and the Environment (New York: Palgrave Macmillan, 2005); U.S. Soil Conservation Service, The Fight Against Erosion, Greatest Enemy of the Soil (Washington, DC: U.S. Soil Conservation Service, 1934); Wilbur R. Mattoon, Stop Gullies-Save Your Farm. United States Department of Agriculture with Contribution from Forest Service (Washington, DC: USDA, 1934); U.S. Resettlement Administration, Helping the Farmer Help Himself (Washington, DC: Government Printing Office, 1936); U.S. Resettlement Administration, Better Land for Better Living (Washington, DC: U.S. Resettlement Administration, 1936); American Association for the Advancement of Science, Conserving Our Natural Resources: A Selected List of Material Useful to Students and Discussion Clubs (Washington, DC: American Association for the Advancement of Science, 1937; USDA Soil Conservation Service, Soil Conservation Districts for Erosion Control (Washington, DC: USDA Soil Conservation Service, 1937); Hugh Bennett, "Developing Enlightened Public Opinion in Conservation, 1940" (address before the Assembly on Use of Human and Natural Resources in Education, 78th annual meeting, National Education Association, Milwaukee, WI, July 2, 1940), Harvard University Graduate School of Design, Vertical Files (hereafter VF) NAC 7560; U.S. Soil Conservation Service, Land Use and Soil Conservation Informational Material Available to the Public (Washington, DC: Soil Conservation Service, 1940); U.S. Soil Conservation Service, Publications and Visual Information on Soil Conservation (Washington, DC: USDA, 1941); Effective Operations of the Soil Conservation Districts: A Group of Papers Presented at the Meeting of the Soil Conservation Section, Association of Southern Agricultural Workers, 42nd Annual Convention, Atlanta, Georgia, February 6, 1941 (Washington, DC: USDA Soil Conservation Service, 1941), VF NAC 7560 US. Such efforts were complemented by public relations campaigns from state and local authorities.