05/12/1920
https://www.presidency.ucsb.edu...
"it is ordered by virtue of authority vested in me by the Act to Regulate Radio Communication, approved August 13, 1912, that such radio stations within the jurisdiction of the United States as are req..."
"By virtue of the power and authority vested in me by the aforesaid Acts of Congress, do hereby prescribe, proclaim and make known that the entries or purchases heretofore made for coal lands in said r..."
"The said coal lands, if otherwise available, shall be subject to disposal under the aforesaid proclamation of September 28, 1914, at $2.00 per acre, until and including June 30, 1917, subject to the p..."
"and furthermore that all radio stations not necessary to the Government of the United States for naval communications, may be closed for radio communication."