This is a six-volume facsimile collection featuring long out-of-print articles, documents and books that shed light on the key developments in radio in the USA - most of which took place in the 1920s and 1930s. Selections include professional journal articles, descriptive and critical articles from more general periodicals, government publications, short books and industry publications. Each volume includes an introduction by the editor. Vol.1: American Wireless to 1920/ Vol.2: Radio's Changing Technology, 1920-45/ Vol.3: The Business of Radio/ Vol.4: Radio Programming to 1945/ Vol.5: Radio's Audiences to 1945/ Vol.6: Regulating Radio to 1945.