<P>Pulitzer Prize-winning photographer Steven G. Smith showcases the picturesque Thames River basin, which extends from southern Massachusetts through Connecticut to the Long Island Sound. The river and its watershed help define the borders of a valley that is unique among its East Coast neighbors, considered to be the last place where dark night sky can be viewed between Washington, D.C. and the Boston metro area. Locals like to call the area the «Quiet Corner» or the «Last Green...