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

Hildreth, C. T. & Stone, B. D. [Draft] Surficial geology of the Marlborough quadrangle, Massachusetts. Open-File Report (2004).

Stone, B. D., C.T., H. & Mabee, S. B. [Draft] Surficial materials map of the Marlborough quadrangle, Massachusetts. Open-File Report (2004).

Hein, C. J., Fitzgerald, D.M,, Barnhardt, W. A. & Stone, B. D. Onshore-Offshore Surficial Geologic Map of the Newburyport East and Northern Half of the Ipswich Quadrangles, Massachusetts. Geologic Map (2010).

Borrelli, M. et al. Onshore-offshore surficial geologic map of the Provincetown Quadrangle, Barnstable County, Massachusetts. (2012).

Borrelli, M. et al. Progress map of the onshore-offshore surficial geologic map of the North Truro quadrangle, Barnstable County, Massachusetts.

Nathan, S. A. & Mabee, S. B. Prototype three-dimensional surficial materials map of the Marlborough quadrangle, Massachusetts. Open-File Report

Mabee, S. B. & Fernandez, M. Surficial geology of a portion of Bristol, Norfolk and Plymouth Counties, Massachusetts. geologic Map (2004).

USGS Surficial Geologic Map Compilations (OFR 2006-1260). at <http://pubs.usgs.gov/of/2006/1260>

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

Soil survey GIS layers for Massachusetts. at <http://www.mass.gov/mgis/soi.htm>