Photo courtesy of Trains Magazine, July 1948

Quoted from Trains Magazine, July 1948: "This consolidation, Alaska Railroad's No. 584, is used in mixed-train service between Anchorage and Sutton, and in freight service between Sutton and the bituminous coal mines of Eska and Jonesville"

Pat Durand's commentary: "My best guess is that this is #504 and the photographer could not read his own notes or the article did a misprint on the number. At the time these locomotives were numbered in the 501,2,4,5,6. range they had the traverse mounted compound air pump on the front pilot. In the earlier 400 number series they were mounted for and aft on the left side of the pilot deck. There never was a #584 on the railroad."