GP668 Aeromagnetic map of the Worcester North Quadrangle, Worcester
County, Massachusetts. 1969 1:24,000.
HA276 Water resources of the Nashua and Souhegan River basins, Massachusetts.
1977 1:48,000.
I1158 Surficial geologic map of Worcester North Quadrangle and part
of the Paxton Quadrangle, Worcester County,
Massachusetts. 1980 1:24,000.
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