While we never have been able to get in touch with John, we were contacted by one of his friends, Andrea Jill Gersten Higgins who writes:
John Finkelstein is a retired professor of finance at the Univ. of New Mexico. He has come to Scottsdale for the past several years to attend family events at the synagogue where I am music director. Sadly, he is in declining health due to Parkinson's disease. Such a shame to be at the mercy of drugs that are dimming his brilliant mind, not to mention his body.