This set of vintage hunting books by Richard A. Wolters includes All About the Retrievers - Duck Dogs (1990 with a forward by Gene Hill) and Revolutionary Rapid Training Method - Gun Dog (1961 with a forward by John C. Randolph). They are in very good condition with tight bindings, intact pages, and no markings except for some numbers written in pencil on the front end page of Gun Dog. Parts of the dust jackets show some yellowing that is consistent with their age. The front cover of Gun Dog has a spot on it. (See pictures for details.) Solid copies for reading or decor.