Townsend Historical Society, 72 Main Street (Route 119), Townsend, Mass.; (978) 597-2106; www.townsendhistoricalsociety.org. Open Tuesday through Friday, 9 a.m. to 2 p.m. Admission $2.
The Hancock Inn, 33 Main Street, Hancock, N.H.; (603) 525-3318; www.hancockinn.com.
Other murals by Porter or attributed to him are on view at these places:
The Birchwood Inn, Route 45, Temple, N.H., (603) 878-3285, has a dining room painted by Porter; Thoreau is believed to have dined there. (Visitors must call ahead.)
The Bethel Historical Society, in Bethel, Me., (207) 824-2908, www.bethelhistorical.org, operates the Dr. Moses Mason House, an 1813 Federal-style home with well preserved murals attributed to Porter. Guided tours in summer, otherwise by appointment; $3.