Over the backbone of the Hoosac Range. A superb motorway of scenic splendor, connecting Housatonic River and Westfield River Valleys. On direct highway east and west across Massachusetts. It rises at gradient of six percent, by graceful curves, to summit 2300 ft. above tidewater. First of great state road mountain cross-overs. Opened Sept. 10, 1910 with a picnic on the skyline. Here Mrs. George Westinghouse raised the American flag. The Ladder cost $240,000 and is the most traveled mountain road in America.