by Pullman in the mid-1960s, the PS-4427 low side covered hopper became the backbone
car for many of the large grain hauling railroads as well as the car of choice
for many leasing companies. The 4427 also was used to haul malt and sand products,
which increased their venerability. Many of these hoppers wore colorful, diverse
schemes, which featured large logos or lettering. Some of these cars still exist
in service today.