|1951||Eugene Larks, Klamath Falls Gems, Medford Rogues, Pittsburg Diamonds, Redding Browns, Reno Silver Sox|
|1950||Eugene Larks, Klamath Falls Gems, Marysville Peaches, Medford Rogues, Pittsburg Diamonds, Redding Browns, Reno Silver Sox, Willows Cardinals|
|1949||Klamath Falls Gems, Marysville Braves, Medford Nuggets, Pittsburg Diamonds, Redding Browns, Santa Rosa Cats, Vallejo Chiefs, Willows Cardinals|
|1948||Klamath Falls Gems, Marysville Braves, Medford Nuggets, Oroville Red Sox, Pittsburg/Roseville Diamonds, Redding Browns, Santa Rosa Pirates, Willows Cardinals|
Historical performance data for professional leagues (affiliated minor leagues, independent minor leagues, fall/winter leagues, and other international leagues) is provided by and licensed from 24-7 Baseball and Chadwick Baseball Bureau. It incorporates the work of many stalwart baseball researchers, including Cliff Blau, Art Cantu, Frank Hamilton, Reed Howard, Kevin Johnson, Bob McConnell, Jack Morris, and Ray Nemec, as well as members of the Minor Leagues Committee of the Society for American Baseball Research.
Perhaps most importantly, it builds upon the seminal work of Ed Washuta, who magnanimously provided the framework to make the whole thing possible.