"Federal Regulation of Radio Broadcasting" (July 8, 1926) by Acting Attorney General William J. Donovan, Official Opinions of the Attorneys General of the United States, Volume 35, 1929, pages 126-132.
Radio Act of 1927 (Public Law 69-632), February 23, 1927, pages 186-200.
"The Federal Radio Commission"History of Communications-electronics in the United States by Captain Linwood S. Howeth, 1963, pages 505-506.