Scope and Content: To establish accurate Massachusetts town boundaries, beginning in 1885 the Topographical Survey Commission (replaced in this function in 1901 by the  Board of Harbor and Land Commissioners) sent out field teams to establish and describe triangulation stations and to set monuments designating boundary lines.  These volumes of computations of geographical positions of town corners are based on field notebooks of the survey teams.  Computations were verified, adjusted, and prepared by the U.S. Coast and Geodetic Survey.
Arrangement: Arranged by county, thereunder by town
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