Pecinpah worked diligently to get Appaloosas approved in other circles of the industry and helped organize numerous regional clubs.  He served as a director for 32 years, first from 1950 to 1979 and again from 1980 to 1983.  Pecinpah served as the president for the ApHC for nine years (1952-1961).  He was active in establishing Appaloosa racing under pari-mutuel rules.  He published many articles including the “Forwards” in several studbooks.  Pecinpah, along with George Hatley and Francis Haines, wrote and published The Appaloosa Horse in 1951.