07/11/1919
https://www.presidency.ucsb.edu...
"This amendment shall be effective from the date the order of March 20, 1914, became effective, viz.: April 1, 1914."
"By virtue of the authority vested in me, I hereby establish the following order for the Canal Zone"
"This order shall take effect thirty days from and after its publication in the Canal Record."
"On the recommendation of the Secretary of Agriculture it is hereby ordered that the withdrawal of the following described tract of unsurveyed land, containing approximately 40 acres, reserved as a ran..."