06/27/1951
https://www.presidency.ucsb.edu...
"NOW, THEREFORE, by virtue of the power and authority vested in me by the Constitution and laws of the United States, including section 9 of the Selective Training and Service Act of 1940 as amended by..."
"This section shall not apply to positions filed by persons having a classified (competitive) civil service status."
"The Civil Service Commission shall, before July 1, 1946, submit recommendations for a general revision of Schedule A of the Civil Service Rules."
"The United States Civil Service Commission is directed to resume, as rapidly as its resources will permit, the announcement of open competitive examinations."