Correspondence, memoranda, writings, reports, press releases, scrapbooks, newspaper clippings, printed material, charts, maps, photographs, and other papers relating primarily to the development of public power policy in the United States and reflecting King's role as a consultant to the U.S. Rural Electrification Administration. Subjects include the Tennessee Valley Authority and the National Popular Government League, a league organized and directed by King. Correspondents include George D. Aiken, John M. Carmody, Lister Hill, David Eli Lilienthal, George Fort Milton, George W. Norris, Gifford Pinchot, Franklin D. Roosevelt, Harry Slattery, Frank P. Walsh, and William Allen White.