It was truly ridiculous. In a review that appeared in Stereo Review, I noted that I had not previously heard of the bass player on a John Handy trio (may have been a quartet) release.
Kofsky wrote a letter to my editor demanding that I be fired because not knowing that bassist proved how ignorant I was when it came to jazz. I was not fired (I left after 28 years as contributing editor), so Kofsky started bombarding the magazine with outrageous post cards in which he referred to me as "vermin." Mind you, the bassist was a local SF player who had not previously recorded, so I think my "ignorance" was understandable.
ANyway, it finally got so bad that I wrote a letter to the dean of the school where Kofsky taught, and I included copies of his hate mail. In the letter, I suggested that someone of Kofsky's mentality might not be the kind of person one would want to see teaching young people.
They must have spoken to Kofsky, perhaps even fired him, for I now began receiving death threats in the mail from him. He also wrote to various other publications that my Bessie Smith biography was pure fiction. Later, he would use that same book to substantiate a vicious attack on John Hammond!
When I discovered that, on the internet, I dropped him a letter, but he was already dead.