Made from a steam locomotive's 'whale back' tender by removing the fuel tank and placing the plow on the water tank which was filled with rock to weigh it down. The plow would be coupled to one or more locomotives which would push it through the snow. Originally a Vanderbilt tender to Rock Island 2-8-2 # 2572 that was rebuilt in mid-1920's to 'loaf of bread' water tank design. In 1957 it was converted to be the plow. Later it was conveyed to St. Louis Southwestern when the Rock Island was broken up and it lines were sold. Number 95589 was donated in 1995 by the Southern Pacific Railroad.