05/12/1947
https://www.presidency.ucsb.edu...
"The Administrator is hereby designated as the certifying authority for the purposes of and within the meaning of subsection (e) of section 124A of the Internal Revenue Code."
"There shall be at the head of the Defense Production Administration a Defense Production Administrator, hereinafter referred to as the Administrator, who shall be appointed by the President by and wit..."
"The Administrator shall direct the administration of the functions provided for in sections 302 and 303 of the Defense Production Act of 1950 except as to food."
"Any officer or agency having by delegation or otherwise any function under this order shall have all the authority conferred by sections 902 and 903 of Executive Order No. 10161."