Kopera, J. P. Preliminary Bedrock Geologic Map of the area surrounding Shepley's Hill, Towns of Ayer and Devens, Massachusetts. Open-File Report (2008).

Kopera, J. P. Preliminary bedrock geologic map of the Ayer quadrangle, Massachusetts. Open-File Report (2006). at <http://www.geo.umass.edu/stategeologist/>

Kopera, J. P. & Hansen, W. R. Preliminary Bedrock Geologic Map of the Hudson 7.5' Quadrangle Worcester and Middlesex Counties, Massachusetts. Open File Report (2014).

Kopera, J. P. & Hansen, W. R. Preliminary bedrock geologic map of the Hudson quadrangle, Massachusetts. Open-File Report (2005).

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).

Massey, M. A. Preliminary bedrock geologic Map of the Palmer quadrangle, Massachusetts. Open-File Report (2008).

Barosh, P. J. Preliminary bedrock geologic Map of the Webster quadrangle, Massachusetts. Open-File Report (2009).

Kopera, J. P., Alvord, D. C., Jahns, R. H., Willard, M. E. & White, W. S. Preliminary bedrock geologic map of the Westford quadrangle, Massachusetts. Open-File Report (2009).

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/>

Kopera, J. P., Mabee, S. B. & Powers, D. C. Preliminary fracture characterization map of the Ayer quadrangle, Massachusetts. Open-File Report (2006).

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

Massey, M. A. Progress map of the preliminary bedrock geologic map of the Billerica quadrangle, Massachusetts. (2011).

Jahns, R. H. & Kopera, J. P. Progress report of bedrock geologic mapping of the Lowell quadrangle, Massachusetts. Progress Map (2010).

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

Barosh, P. J., Fahey, R. J. & Pease, Maurice Henry, J. Preliminary compilation of the bedrock geology of the land area of the Boston 2 degree sheet, Massachusetts, Connecticut, Rhode Island and New Hampshire. USGS Open File Report (1977). at <http://pubs.er.usgs.gov/publication/ofr77285>

Kopera, J. P. & Mabee, S. B. Preliminary field report on the November 13th-14th, 2011 landslide near Steam Mill Road, Deerfield, Massachusetts. Open File Report 19 (Massachusetts Geological Survey, 2011). at <http://www.geo.umass.edu/stategeologist/Products/reports/Deerfield_LS_Report_final.pdf>

Mabee, S. B. & Kopera, J. P. Preliminary field report on the Route 2 landslides of tropical storm Irene, August 28, 2011. 18 (Massachusetts Geological Survey, 2011). at <http://www.geo.umass.edu/stategeologist/Products/reports/Rt2_Irene_FieldReport.pdf>

Wise, D. U., Mabee, S. B. & Hardcastle, K. C. Preliminary Geology and Assessment of Groundwater Potential at Cresta de Sacramento, Palpa, Peru: Field Report ? July 2002. 31 (2003).

Position Statements from the Geological Society of America Geology and Society Division. at <http://www.geosociety.org/positions/>

PostGIS. at <http://postgis.refractions.net/>

A primer on Plate Tectonics - from UC Berkely Museum of Paleontology. at <http://www.ucmp.berkeley.edu/geology/tectonics.html>