| Fitchburg |
|---|
GP739 Aeromagnetic map of the Fitchburg Quadrangle, Worcester
County, Massachusetts. 1971 1:24,000.
HA276 Water resources of the Nashua and Souhegan River basins, Massachusetts.
1977 1:48,000.
MF959 Reconnaissance bedrock geology map of the Fitchburg Quadrangle
and part of the Ashby Quadrangle,
Northeast-central Massachusetts. 1978 1:24,000.