Douglas, Susan J. Inventing American broadcasting 1899-1922 / Susan J.Douglas. - Baltimore : Johns Hopkins University Press, 1987. - 363p PBK ISBN: 0801838320 Standard No.: 2340 [old SOUL v1.0 record id] Subjects--Topical Terms: Radio Broadcasting - United States - History Dewey Class. No.: 384.540973 / D 743 i