70 heavyweight mail baggage car is Pullman green with
gold lettering and runs on 6-wheel passenger trucks. Built in
the 1920s, this car was used by Denver & Rio Grande Western.
Denver & Rio Grande Western operated the highest mainline
through-route in the United States, cresting at over 10,000
feet in Tennessee Pass, Colorado. D&RGW and Southern Pacific
merged in 1988 and the company was later acquired by Union Pacific.