4-8-2 No. 403 belonged to the first group of Mountain type locomotives delivered to the New York, Ontario & Western. Coming from American Locomotive Company in 1922, the engines of class Y weighed 317,000 pounds and mustered a tractive force of 50,290 pounds. They sustained 200 p.s.i. of boiler pressure, rolled on 69-inch drivers, and had 27x28-inch cylinders. Their grate area totaled 67 square feet, their evaporative heating surface 3693 square feet, and their superheater surface 1014 square feet. With the early dieselization of the NYO&W, No. 403 was scrapped in 1948. The photo was taken by an unspecified lensman at Middletown, New York on April 8, 1936 and comes to our Random Steam Collection via Carl Weber.