|Martinsburg Blue Sox||Jesse Runser and Jiggs Donahue|
|Waynesboro Red Birds||Hal Funk and Ed Miller|
|Chambersburg Maroons||Mickey Keliher|
|Hanover Raiders||George Hammen and Jesse Altenburg|
|Frederick Hustlers||Henry Sherry and Joe Neptune|
|Hagerstown Hubs||Billy Purtell, Lester Bangs and Joel Skelton|
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.