06/22/1963
https://www.presidency.ucsb.edu...
"Now, Therefore, I, John F. Kennedy, President of the United States of America, acting under and by virtue of the authority vested in me by section 202 (c) (4) (B) of the Sugar Act of 1948, as amended,..."
"The gratitude of the nation as well as my own warm wishes will go with you into whatever field of endeavor you turn your energies."
"It is only with deep regret that I accede to your request to retire from active duty."
"I am looking forward to working closely with you in the future as I have in the past."