This lead may not yield any new info about John. What I have though is a guy who is an old timer from the wild and crazy Rush Street of the 60s and 70s. He can give me a sense Rush Street lore. I have sent him some pictures of Count Dante. He defininately knew a guy called Dante the Magician who hung out with a greek Belly dancer named Dorthea. The descriptions sound similar but I will not know anymore until he sees the pictures. I think I will interview him anyway. He knew a lot of people, kept up with the movings of the Chicago Outfit back then. This could be useful. He describes a collection of characters that would fill a Nelson Algren novel.
I am tired, I got up too early today.