Hi Curt, questions are fine, however I have few answers when it comes to Brett's technique. It was seldom a topic of discussion for more than a few minutes. He was once asked about dilutions and responded that he had two beakers; one he filled with stock and the other he filled with water. So much for the fine points of his technique. Yes, he did use the Agfa Pan 25 and developed it in Rodinal, that I do know; reports are at 1:100.
Brett and I had different, yet similar, Army experiences. He was sent to truck driving school, until someone higher up realized that he was Edward Weston's son and might be better off in a photographic capacity. So, the strings were pulled, and Brett was sent to the Army Pictorial Center in NY. His CO was Arthur Rothstein, who was well aware of Brett and his father. It was while at the APC that Brett did his New York work with the permission of, and encouragement from, Rothstein.
Twenty years after Brett left the Army Pictorial Center, I was sent there on the day I completed infantry training in California. At that time (1964), the Army was starting to place personnel in areas reflecting their civilian skills. I was spared truck driving school, or worse fates.