04/04/1947
https://www.presidency.ucsb.edu...
"In keeping with the Administration's policy of winding up the affairs of war agencies as quickly as possible after their emergency responsibilities have been discharged, I have acted upon your recomme..."
"I am sure you will find them ready to cooperate fully."
"The Secretary of the Interior, acting through such agency or agencies of the Department of the Interior as he shall designate, is authorized and directed to wind up the affairs of the Administration."
"The Petroleum Administration for War, established by Executive Order No. 9276 of December 2, 1942, together with the offices of Petroleum Administrator and Deputy Petroleum Administrator, is terminate..."