American Broadcasting Company its territories. ABC News provides news and features content for select radio stations owned by Citadel Broadcasting, which purchased the ABC Radio properties in 2007 (however relaunched in 2014). In the 1930s, radio in the United States was dominated by three companies: the Columbia Broadcasting System (CBS), the Mutual Broadcasting System, and the National Broadcasting Company (NBC). The last was owned by electronics manufacturer Radio Corporation of America (RCA), which owned two radio networks that each ran different varieties of programming, NBC Blue and NBC Red. The NBC Blue Network was created in 1927 for the primary purpose of testing
Library of American Broadcasting to its new location. Now housed in the Broadcasting Archives at the University of Maryland, the Library of American Broadcasting is a wide-ranging collection of audio/video recordings, books, pamphlets, periodicals, personal collections, photographs, scripts, and vertical files devoted exclusively to the history of broadcasting. LAB holds many collections of note, including the papers of Sol Taishoff, founder of the influential industry publication "Broadcasting"; the papers of Helen J. Sioussat, director of the Talks Department at CBS (1937–58); the scrapbooks of Edward J. Kirby, chief of the radio branch of the War Department in World War II; and the papers of