How did you come by the book and....

is it possible to obtain more copies? I have tried to contact that Fred Scmidt guy in the link you first posted about Bertholy, but emails go unanswered.

The quote you referenced is why most golfers never heard of Bertholy "...it is unreasonable to expect fine golfswing acheivement in less than two years for 90% of all aspiring golfers". Most teachers don't have the b---s to tell their students things like that, and most students do not wish to put in the effort. It's like a business associate used to tell me. Ask 10 people if they want to be a millionaire and all 10 will say "sure do". Then explain to them what they will have to do to be a millionarie and none of them will want to be one. Like Moe said..."to acquire a good golf swing a man must work".

I would appreciate any "gleanings" from the book and any info on how to obtain a copy.