Hatch, N. L. et al. The bedrock geology of Massachusetts. U.S. Geological Survey Professional Paper 1366, (United States Geological Survey, 1988).

Zen, E. -an et al. Bedrock Geologic Map of Massachusetts. USGS Unnumbered Series (1983). at <http://ngmdb.usgs.gov/Prodesc/proddesc_16357.htm>

Kopera, J. P., Shaw, C. E. & Fernandez, M. Preliminary bedrock geologic Map of the Milford quadrangle. Open-File Report (2007).

Robinson, P. & Fernandez, M. Preliminary bedrock geologic map of the Orange 7.5' quadrangle, Massachusetts (including portions of the Millers Falls and Athol 7.5' quadrangles). Open File Report (2008).

Kopera, J. P. & Shaw, C. J. Preliminary bedrock Geology of the Northern Portion of the Blackstone quadrangle, Massachusetts. Open-File Report (2008). at <http://www.geo.umass.edu/stategeologist/>

The Massachusetts DEP Hydrogeologic Information Matrix. at <http://www.mass.gov/eea/docs/dep/water/compliance/hydromat.pdf>

National Geologic Map Database. at <http://ngmdb.usgs.gov/>

Reading Maps with a Critical Eye: Becoming an Informed Map Reader. at <http://www.maine.gov/doc/nrimc/mgs/mapuse/informed/informed.htm>

Tapestry of Time and Terrain. at <http://tapestry.usgs.gov/Default.html>

USGS Publications Warehouse. at <http://infotrek.er.usgs.gov/pubs/>

What 7.5' quadrangle am I in?: A PDF of a paper map. at <http://www.geo.umass.edu/stategeologist/Quads_Towns_WS7_34x44.pdf>

What 7.5' quadrangle am I in?: KMZ of 7.5" quadrangles for use in Google Earth. at <http://www.geo.umass.edu/stategeologist/QuadTownsWatersheds.kmz>