MASH - Season 5 Episode 14 -

Radar gets accepted into the "Famous Las Vegas Writers School", and begins to write his impressions of the camp. It happens to be Frank's birthday, so Hawkeye and B.J. stage a fight with each other to make Frank happy. Radar: "Dear Mum, I gave up the writing course on account I found out I can write better as myself than as Hemingway, O'Neill, or any of those other bums. Simplistically yours, Walter."