Standard Catalog of Smith & Wesson 4th Ed. (See link below)

This book is close to 100% accurate on all Smith & Wesson products from firearms to non-firearms products. This will assist you in the purchase of vintage/collectors S&W and help you steer clear of sellers that may try to misrepresent their firearms. Other titles include Standard Catalog of:
Ruger
Winchester
Colt

These are published by Guns Digest when you buy make sure you get the most current edition. The one for Colt is 3d.Ed. published in 2013.

Here is the link to the S&W book on Amazon
https://goo.gl/kYUJdF