Fox River Valley League was an independent league based in Wisconsin.
1929 Appleton, Fond du Lac, Green Bay, Kaukauna, Kimberly-Little Chute, Marinette, Neenah-Menasha, Wisconsin Rapids
1930 Appleton, Green Bay, Kaukauna, Kimberly, Neenah, Wisconsin Rapids
1931 Shawan entered the league; Neenah left the league.
1932 Appleton Athletics, Appleton Merchants, Darboy, De Pere, Green Bay, Little Chute, Neenah, Oshkosh, Wrighton.
1933 Not sure if this league played
1934 Not sure if this league played
1935 Appleton, De Pere, Green Bay, Kimberly, Little Chute, Mensha
1936 Clintonville and New London entered the League
1937 Not sure if this league played
1938 Appleton, Grand Chute, Green Bay, Kaukauna, Little Chute and Neenah
1939 Kimberley, Manitowoc, Menesha and Oshkosh entered the league; Grand Chute and Neenah left the league.
1940 to 1955 Not sure if this league played
1956 Appleton, Freedom, Harriston, Kaukauna, Little Chute, Manitowoc, Menasha Falcons, Menasha Mac, Reedsville, Two Rivers