04/23/1931
https://www.presidency.ucsb.edu...
"So much of the order of November 24, 1916, creating Power-Site Reserve No. 566 as affects the lands hereinafter described is hereby revoked"
"This order shall become effective on July 1, 1931."
"So much of the orders of May 19, 1910, creating Temporary Power-Site Reserve No. 145 and of July 2, 1910, creating Power-Site Reserve No. 145 as affects the lands hereinafter described is hereby revok..."
"It is indeed fitting that these services should be commemorated with an enduring monument that will remind us ever of his patriotism and self-sacrifice."