The Wabash's J-1 class of Pacifics were erected by Baldwin Locomotive Works and the American Locomotive Company's Brooks Works in 1912. No. 660, first of the series, poses here at Fort Wayne, Indiana in an undated photo before the drop-coupler pilot was applied, suggesting a 1930s provenance. These locomotives had 74-inch drivers, 24x26-inch cylinders, and a boiler pressure of 215 p.s.i. Not superheated originally, they were rebuilt with 3310 square feet of evaporative heating surface and 740 square feet of superheating surface, and weighed 226,000 pounds as modified. Their grate area totaled 63 square feet, and they exerted 36,984 pounds of tractive force. The J-1 and J-2 Pacifics were the Wabash's largest passenger locomotives until superseded by the home-built Hudsons of 1943-1947; by 1954 all the J-1s had been dropped from the roster. Wayne Koch supplied the image, source unidentified, from his collection.