National Baseball Hall of Fame and Museum: Eras: Expansion, "Rules For Election For Managers, Umpires, Executives, And Players For Expansion Era Candidates For Election To The National Baseball Hall Of Fame" [1] (页面存档备份,存于互联网档案馆)
National Baseball Hall of Fame and Museum: Eras: Expansion, "Rules For Election For Managers, Umpires, Executives, And Players For Expansion Era Candidates For Election To The National Baseball Hall Of Fame" [1] (页面存档备份,存于互联网档案馆)