William,
I got to meet Herman 2 years ago in Houston at the Houston Center for Photography. You are correct that he used a largeformat camera. He shot most of the Jazz stuff in his studio so he could control his lights. So, he created an atmosphere that the musicians were comfortable with. He was a fashion and commercial shooter around the same time. He made those photos for the love of it and never really tried to market them. Once in England when he was very broke, a gallery agreed to show the work and from what he said that show set records for selling work. That became his legacy. He is a very nice and humble man. Must be in the middle 70's by now.

lee\c