I visited his shop sometime in the early to mid 60's with Wood Trumbo, he was a collector builder and had more original gun parts than I have ever seen any where. He helped me build my first flintlock using all original parts. I was in the service when Hacker died but drove over there while home on leave, probably late '72. The place was pretty messed up, there was a fellow there named Bobby Carr, the only reason I remember his name is because I went to school with a guy with the same name. He told me he had been Hacker's helper, kind of a strange guy. I often wondered if he built any guns. I never went back.
Tim C.