The Boston & Albany's class K-14g 4-6-2s were erected by American Locomotive Company in 1913 as the New York Central's class K-11f, but were rebuilt in the early 1920s and reclassified. They had a driver diameter of 72 inches and 26x26-inch cylinders, and sustained 190 p.s.i. of steam pressure. With these dimensions they developed a nominal tractive effort of 39,420 pounds, and their locomotive weight was 275,600 pounds. No. 578, appearing in this image from Carl Weber's collection, was originally NYC 3182. She assumed her B&A number in 1921, but was again renumbered in 1951 as NYC 4378 and was sold for scrap the following year.