This 83' heavyweight 3-2 observation car is painted Pullman Green with gold logo and lettering. It was built by Pullman Standard in the mid-1920s and runs on six-wheel passenger trucks. A block of eight Plan 3959B "Crystal" series sleeperobservation cars had their air-conditioning applied by the Santa Fe in May and June 1934. The 3-2 observation cars were used on the Santa Fe's heavyweight "Chief" before 1938. One of them, "Crystal Bluff", was part of the original heavyweight "Super Chief" that operated in 1936 and 1937. With the delivery of lightweight equipment for the "Super Chief" and the "Chief" in 1938, these cars became obsolete to the Santa Fe.