Harry Truman actually said...
The Director of the National Park Service, under the direction of the Secretary of the Interior, shall have the supervision, management, and control of these lands as provided in the act of Congress entitled 'An Act to establish a National Park Service, and for other purposes,' approved August 25, 1916 (39 Stat. 535, 16 U.S.C. 1-3), and acts supplementary thereto or amendatory thereof.
Context
Proclamation 2925—Enlarging the Lava Beds National Monument, California
04/26/1951