The Walther's model is of ATSF 1339-1344 series Dorm Lounge, built in 1950 for the Super Chief by Pullman Standard, Lot 6849, Plan 7623, Serial No. PS50-13699-001 through 006.

The critical modeler will want to consult Randall's P-S book as several of the windows are double sash and may require a silver decal strip to bring this feature out. They were delivered sans-skirts. All 6 went to Amtrak in 1971 and the 1340 was sold to "The Reading Company" in 1982.