In 1942 the American Locomotive Company began delivery of 20 class J-3 4-8-4s to the Nashville, Chattanooga & St. Louis. Their specifications were similar to those of the J-2 class of 1930 except that they weighed 400,500 pounds without tender had a slightly larger evaporative heating surface of 4203 square feet. Some were fitted with running board skirting in yellow paint, and were known as the "Yellow Jackets." No. 570, first of the "yellow jackets," is shown here when newly delivered from ALCo. The photo was made available to our Random Steam Collection courtesy of Charles B. Castner and the University of Louisville Archives, and came to us via Tom Rock of Rock on Trains.