Some time back the name Robert Chadwick came up. He was a lock maker and gunsmith from Chadd,s Ford Pa. He was editor of a small magazine called ( The Muzzleloader) in 1963 1964.Said magazine was put out by the Grand National Association for the Preservation of Pennsylvania Rifle Shooting. Some of the directors were Hacker Martin,Reaves Goehring, Madison Grant,Roy Keeler. My guess is this was a small organization similar to the NMLRA that failed.