04/10/1930
https://www.presidency.ucsb.edu...
"There is no question on that."
"Now, Therefore, I, Herbert Hoover, President of the United States of America, by virtue of the power in me vested by section two of the act of Congress entitled, 'An Act for the Preservation of Americ..."
"Warning is hereby expressly given to all unauthorized persons not to appropriate, injure, destroy or remove any feature of this Monument and not to locate or settle upon any of the lands thereof."
"You are all aware that I have held that this transfer ought to be made."