Black Diamonds 1929 - Charleroi Governors 1930 - Johnstown Johnnies -3 1931 - Cumberland Colts -2 1932 - Charleston Senators -2 1933 - Zanesville Grays 1934 - Zanesville Grays - 2 1935 - Huntington Red Birds 1936 - Zanesville Grays - 3 1937 - Canton Terriers 1938 - Portsmouth Red Birds 1939 - Canton Terriers -2 1940 - Akron Yankees 1941 - Erie Sailors 1942 - Erie Sailors -2 1943 - League shutdown due to World War II 1944 - League shutdown due to World War II 1945 - League shutdown due to World War II 1946 - Erie Sailors -3 1947 - Vandergrift Pioneers 1948 - Erie Sailors -4 1949 - Erie Sailors -5 1950 - Butler Tigers 1951 - Niagara Falls Citizens Baseball Hall of Fame alumni Chief Bender, 1927 Johnstown Johnnies Joe Cronin, 1925 Johnstown Johnnies Whitey Ford, 1947 Butler Yankees Bob Lemon, 1938–1939 Springfield Indians Joe Medwick, 1930 Scottdale Scotties References Johnson, Lloyd and Wolff, Miles, editors: The Encyclopedia of Minor League Baseball. Durham, N.C.: Baseball America, 1997. External links Baseball Reference Middle Atlantic League Baseball leagues in Ohio Baseball leagues in Pennsylvania Baseball leagues in New York (state) Baseball leagues in West Virginia Baseball leagues in Maryland Sports leagues established in 1925 Sports leagues disestablished in 1951