Butte City League was an Independent League that was based in Montana
1910 - Anaconda, Butte A. C. M., Butte B & M, Butte Electrics
1911 - Butte A. C. M., Butte Bankers, Butte Boston & Montana, Butte Courthouse, Butte M. J. B., Reduction Works
1933 - Anaconda, Butte Crawley Motors, Butte Knights of Columbus, Butte Price-Kearns, Butte Western Fuel
1934 - Butte Anics Brothers, Centerville, Eureka Beer, Humber Keno, Butte Success Market, Butte Stockers
1935 - Butte Amos Brothers, Butte Brewery, Butte Centerville, Butte Highlander Beer, Butte Success Market, Butte Young Democrates
1936 - Butte American Legion, Butte Beer, Butte Eclipse, Butte Highland Beer, Butte, Modern Woodmen, Butte Pirate
1937 - Butte American Legion, Butte East Side, Butte McQueen, Butte Modern Woodmen, Butte Parkway,
1938 - Butte Centerville, Butte East Side, Butte Legion, Butte McQueen, Butte Modern Woodmen, Butte Parkway,
1939 - Butte Centerville, Butte East Side, Butte Grands, Butte Legion, Butte McQueen, Butte Miners Union, Butte Modern Woodmen, Butte Parkway
1940 - Butte Legion, Butte McQueen, Butte Miners Union, Butte Modern Woodmen, Butte Parkway, Butte Walkerville
1941 - Butte McQueen, Butte Miners Union, Butte Parkway, Butte Walkerville, Butte Welders
1942 - Butte McQueen, Butte Miners Union, Butte Parkway, Butte Walkerville
NOTE 1 - City League probably change names form City League to Butte Copper League. Reason is that Two Teams from City Legaue started the Copper League
1943 - Butte McQueen, Butte Miners Union, Butte Walkerville