These heavyweight depressed center flat cars are painted box car red with white lettering. They were built in June 1958, serviced in January 1959 and runs on Buckeye trucks. The cars from this short series were built and originally run on the Texas & New Orleans R.R. (T&NO) in 1958 and numbered into series 19101-19120. Fifteen cars were brought over to the Southern Pacific and renumbered in January 1959. The final five of the new series were added in 1962.