I just read your Message in the internet. Hermann Köhl was the oncle of my mother. He was born at 15.4.1888 in Neu-Ulm / Germany. He died at 7.10.1938 in München/ Germany. His parents were Wilhelm Köhl and Wally Köhl. Josef Köhl must be the brother of Wilhelm Köhl. I know, that he was a "professor of music" in USA an that he was married with a woman called Paula (from Amerika). I' d like to know more about Josef Köhl. Can You help me?