| Ashburnham |
|---|
GP729 - Aeromagnetic map of the Ashburnham Quadrangle, Worcester
and Middlesex Counties, Massachusetts, and
Cheshire and Hillsborough Counties, New Hampshire. 1971 1:24,000.
HA249 Ground-water favorability of the Connecticut River basin, New
England States. 1967 1:250,000.
HA276 Water resources of the Nashua and Souhegan River basins, Massachusetts.
1977 1:48,000.
HA293 Water resources of the Millers River basin, north-central Massachusetts
and southwestern New Hampshire.
1969.