Lucille Kallen was one of the core writers, and went on to write mysteries.
Unfortunately, she's hardly ever mentioned as one of the writers.
From http://povonline.com/2001/News060701.htm :
"For what it's worth, when I worked with Sid in the eighties, he told me that, as far as he was concerned, Kallen and the two Mels [Brooks and Tolkin] had probably, between the three of them, accounted for around 75% of everything he did on TV...and Imogene Coca felt that Kallen had written most of her best material. So it was a little maddening that, when Lucille Kallen passed away, most of the obits made it sound like her great achievement was being one of the writers, along with Larry Gelbart and Woody Allen, on Your Show of Shows. (Larry spends a lot of time correcting people who think he worked on that series and also that he somehow "created" M*A*S*H, long after it was a book and a movie.)"
As was Mel Tolkin who went to write for 'All in the Family'. Quite a breeding ground.