Steve,
As Stumpy put it, " I'm very impressed with your knowledge of collector firearms." I think all of us appreciate your effort and your knowledge in bringing this information to us.
Back in the early 70's when I started being interested in firearms these older ones could hardly be given away. Today things have certainly changed. Now they are big bucks. I for one have been doing a lot of wishing of late.
John M. Browning, as you mentioned, was another firearms designer from that period. A biography of him,"John M. Browning, American Gunmaker". New York: Doubleday, 1964. OCLC 1329440, was a very interesting book about him, showing him for the genius that he was.
Again, Here's The link to the Wikipedia page about him.
Chester