 He joined the Cleveland Indians organization in 1950, first as business director of Cleveland minor league system and later was promoted as general manager for Triple-A Indianapolis Indians in 1953.While working for the Indians, he provided assistance in the development and monitoring of future big leaguers as Hank Aguirre, Joe Altobelli, Rocky Colavito and Al Smith, among others.Stumpf was a long resident of Milwaukee, Wisconsin, where he died at the age of 84.