Bi State League was an Independent League that was based in Maryland and Delaware.
1948 - Galena, Henderson, Millington, Queenstown, Sudlersville,, Townsend (DE)
1949 - Centreville, Galena, Henderson, Kenton (DE), Millington, Queenstown, Sudlersville, Townsend (DE)
1950 - Centreville, Galena, Henderson, Kent Island, Kenton (DE), Millington, Queenstown, Sudlersville
1951 - Centreville, Chestertown, Galena, Henderson, Kent Island, Kenton (DE), Millington, Sudlersville
1952 - Centreville, Chestertown, Galena, Kent Island, Kenton (DE), Millington, Rock Hall, Sudlersville
1953 - Cecilton, Centreville, Chestertown, Galena, Kenton (DE), Millington, Rock Hall, Sudlersville
1954 - Cecilton, Centreville, Chestertown, Galena, Kenton (DE), Millington, Rock Hall, Sudlersville
1955 - Cecilton, Centreville, Chestertown, Galena, Kenton (DE), Millington, Rock Hall, Sudlersville
1956 - Some teams move to Mar-Del League