WHISTLER HOUSE MUSEUM OF ART

243 Worthen St., Lowell, (978) 452-7641. Wed. through Sat. from 11 a.m. to 4 p.m.

April 29 through June 2: "Landscapes of North America," works by Stephen La Pierre, Caleb Stone, Richard Tashjian, and Samuel Thompson. Opening reception on April 29 from 2 to 4 p.m.