Northeastern League was an independent league in 1891, 1895-1896, 1913 and a Class B in 1934.
1891 Lewiston ME, Lynn MA, Portland ME, Salem MA, Woonsocket RI
1913 Bangor ME, Concord NH, Fitchburg MA, Gloucester MA, Manchester NH, Portland ME, Salem, MA, St Johns NB
1933 Cambridge, MA, Hartford CT, Lowell MA, Manchester, NH, New Bedford MA, Springfield MA, Waltham MA and Watertown MA. During the season, Cambridge moved to Wayland MA and Waltham moved to Worcester MA then to Malden, MA and back again to Worcester.