The ubiquitous W-3 class 2-8-2s of the Northern Pacific Railway are represented here by No. 1807, seen at Duluth in a July, 1955 photo by the late Bruce Meyer. The W-3s were the freight workhorses of the Northern Pacific, which owned at least 135 of them. They had 63-inch drivers and 28x30-inch cylinders, and carried a boiler pressure of 200 p.s.i. They weighed between 328,400 and 341,500 pounds, had 3592 square heat of evaporative heating surface, and pulled with a tractive effort of 63,466 pounds.