Boxcars with "For Progress" Herald. Car in front has decals in p

Part of fleet of boxcars. These are ARA '37 cars built and lettered w/ the large herald. 4000-4999 I have painted all boxcar red. 5000-5249 are being painted w/ the black roof/ends. The C&O had these painted both ways in Series 4000-5499 over the life of the cars.