Ross, M. E. Cape Anne: Its physical and environmental geology. (2015). at <http://www.researchgate.net/publication/275963133_Cape_Ann_Its_Physical_and_Environmental_Geology>

Allen, D. & Goldner, M. Boston Rocks!. at <http://bostongeology.com/index.htm>

Digital Versions of Older NEIGC Guidebooks (1920-1989). at <http://www.library.unh.edu/digital/category/science-technology>

The Dynamic Digital Map of New England by Chris Condit (U-Mass, Amherst). at <http://ddm.geo.umass.edu/ddm-ne/index.html>

Geologic Fieldtrip Guidebook database for North America - (AGI). at <http://guide.georef.org/dbtw-wpd/guidens.htm>

Geology Tours of National Parks. at <http://www2.nature.nps.gov/geology/tour/index.htm>

National Park Service Teacher Resources. at <http://www2.nature.nps.gov/geology/education/index.cfm>

NEIGC Fieldtrip guidebooks for various parts of New England. at <http://w3.salemstate.edu/ lhanson/NEIGC/Guidebooks.html>

New England Intgercollegiate Geological Conference (NEIGC). at <http://w3.salemstate.edu/ lhanson/NEIGC/index.html>

Roadside Geology of Massachusetts. at <http://mountain-press.com/item_detail.php?item_key=606>

 U-Mass Geoscience Contribution Series. U-Mass Geoscience Publication Series (1978). at <http://www.geo.umass.edu/research/list.html>