04/30/1975
https://www.presidency.ucsb.edu...
"your resignation as Special Assistant to the President, effective as you requested December 31, 1974, is accepted with deepest regret."
"major legislative successes can be achieved even under the most difficult circumstances."
"you have earned their thanks, the respect and friendship of your colleagues on both sides of the political fence, and my own lasting admiration and gratitude."
"your superb services in the White House Office of Legislative Affairs will be greatly missed."