I am going to buy one of the Standard Catalogs of Smith & Wesson. I mainly deal with 5 screws but also revolvers into the 1980's. Does the 4th Edition include all of the 3d edition plus some?

I ask because I had 3 editions of Bolt Action Rifles by Frank DeHaas and got rid of the 2d and 3d because I didn't like them as well as the First.

The 3d edition of the Std Cat of S&W has much better write-ups as to it's content than the 4th Edition does at the various book selling sites. Which do folks recommend?