I thought this board would like to know that I wrote Warren in May of 1999. At the time he was saying the 2nd edition of Security Analysis was the best so I wondered if he had a favorite edition of The Intelligent Investor. He wrote me back on May 18, 1999 and said "I think all of the editions of THE INTELLIGENT INVESTOR are about the same, but I lean toward the first one for sentimental reasons."
I'm guessing in 1999 there were probably 5 editions out. If I was smart enough I would post the letter.
Happy Holidays,