For motorists traveling in Dutchess County on the Taconic State Parkway, the dominant impression is the beauty of a seemingly unchanged natural landscape. Nestled under the shadow of the Taconic (Berkshire) Mountains to the east with views west to the Catskills, the parkway follows a ridge halfway between the towns and cities on the Hudson River and those in the Harlem Valley bordering New England. The parkway, as envisioned by a commission appointed...