Ancestry.com. Massachusetts Pioneers to the West Index [database on-line]. Provo, UT, USA: The Generations Network, Inc., 1997.Original data: Flagg, Charles A.. An Index of Pioneers from Massachusetts to the West, Especially the State of Michigan. Salem, MA, USA: Salem Press Co., 1915.
This list #of pioneers includes many "sons and daughters" of old Massachusetts Bay Colony families who removed to New York State and states of the Midwest, principally Michigan. Each entry often includes vital information about the settler and the reference from which the information was taken, usually the county record in New York or Michigan.