The Pennacook (Western Abenaki) lived in the valleys of the Merrimac River in New Hampshire and the Connecticut River in Vermont, New Hampshire, and northern Massachusetts, and in neighboring areas. They were a confederacy of Algonkian-speaking groups; most, such as the Wamesit, Agawam, Nashua, and Winnepesaukee, are now extinct. Some Pennacook descendants live today with the St. Francis Abenaki in Quebec.
Day, Gordon M. (1978). "Western Abenaki." In Handbook of North American Indians. Vol. 15, Northeast, edited by Bruce G. Trigger, 148-159. Washington, D.C.: Smithsonian Institution.