| Blackstone |
|---|
GP770 Aeromagnetic map of the Blackstone Quadrangle, Worcester
County, Massachusetts, and Providence County,
Rhode Island. 1971 1:24,000.
HA554 Hydrology and water resources of the Charles River basin, Massachusetts.
1975 1:48,000.
HA682 Water resources of the Blackstone River basin, Massachusetts.
1986 1:48,000.