Hey Larry congratulations on owning a LC Smith hammer gun. I have a 1907 that I bought at the Southern years ago from an LCSCA member, best buy I ever made, love it. You may want to contact our good member an expert on
Smith Hammer Guns David Williamson an see if he has any more copies of his book. The Subtle and not so Subtle Changes of the LC Smith Hammer Gun. The only man to ever write a book on Smith Hammer guns that I'm aware of.