yes the womack book is interesting , he acually does a hardness , stress type test on the front ring by hammering it ,to show the flexability of the metal there are also a ot of pics of hoffman , holland, griffins , brenneke , etc. it is not a big book but at the time it was all that was out there ,....... i hope i dont sound ancient i was about 26 years old when i last talked to him ,about 24 years ago , i,m going to throw a plug in for mike petrovs book (unknown custom gunmakers} while were talking books , if you like springfields !! although my j.p. sauer is pictured in it ....paul