A first impression of Williamstown, Massachusetts: It’s a great place to witness the works of Renoir, Pissarro, Manet, and more this month. Following critically acclaimed showings in London and Amsterdam, the stunning exhibit of French impressionist painting visits the Clark Art Institute through September 9. Impression: Painting Quickly in France 1860-1890showcases the leading figures of the famous movement and their revolutionary work. (413) 458-2303,