This 12-1 heavyweight sleeper car is yellow with green band and runs on 6-wheel passenger car trucks. This car was used on trains that were part the Chicago & North Western Railroad system in the 1940s-1950s. Today, C&NW is now part of Union Pacific, exclusively a freight railroad with over 32,000 miles of track, but prior to 1971, C&NW operated numerous passenger trains and services.