October 16, 1931
Executive order of July 13, 1910, effecting Coal Withdrawal Wyoming No. 1, under the provisions of the act approved June 25, 1910 (36 Stat. 847), is hereby modified to permit the withdrawal and use of the following-described land as an air navigation site under the provisions of the act approved May 24, 1928 (45 Stat. 728):
Sixth Principal Meridian
T. 20 N., R. 91 W., sec. 4, SW. ¼ SW. ¼.
HERBERT HOOVER
The White House,
October 16, 1931.
Herbert Hoover, Executive Order 5733—Order of Modification, Coal Withdrawal Wyoming No. 1 Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/361306