Plante, A. R. Western Massachusetts Mineral Localities. (Valley Geology, 1992).

Fernandez, M., Duncan, C. & Mabee, S. B. Well Inventory of the Ayer quadrangle, Massachusetts. Well Inventory (2006).

Fernandez, M., Duncan, C. & Mabee, S. B. Well inventory of the Hudson quadrangle, Massachusetts. Well Inventory (2005).

Duncan, C. & Mabee, S. B. Well inventory of the Marlborough quadrangle, Massachusetts. Well Inventory (2004).

Fernandez, M., Duncan, C. & Mabee, S. B. Well Inventory of the Milford quadrangle, Massachusetts. (2007).

Fernandez, M. Well Inventory of the Westford quadrangle, Massachusetts. Well Inventory (2009).

Water Science for Schools (USGS). at <http://ga.water.usgs.gov/edu/>

Water Science for Schools (USGS). at <http://ga.water.usgs.gov/edu/>

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>

Written In Stone: A geological history of the northeast United States. at <http://shop.blackdomepress.com//index.php?main_page=product_info&cPath=7&products_id=40>