03/28/1951
https://www.presidency.ucsb.edu...
"To maintain our natural wealth we must engage in full and complete conservation of all our resources."
"The establishment of this park is an object lesson and an example to the entire Nation that sound conservation depends upon the joint endeavors of the people and their several governments."
"These are the people's parks, owned by young and old, by those in the cities and those on the farms."
"By virtue of the authority vested in me as President of the United States, and in further effectuation of the policies declared by section 1 of the Atomic Energy Act of 1946 (60 Stat. 755), it is here..."