Herbert Hoover actually said...
Under authority and pursuant to the provisions of the act of Congress approved June 25, 1910 (36 Stat. 847), as amended by the act of August 24, 1912 (37 Stat. 497), it is hereby ordered that subject to valid existing rights the deposits of oil shale, and lands containing such deposits owned by the United States, be, and the same are hereby, temporarily withdrawn from lease or other disposal and reserved for the purposes of investigation, examination, and classification.
04/14/1930