 The Union Pacific took delivery of all ten cars in 1956 and they saw service on a variety of trains, including the "City of Portland" and "City of Los Angeles".Amtrak acquired all ten cars from the Union Pacific in 1971 and operated them through the 1970s; all but one were retired by 1981.The remainder, "Placid Scene", it converted from steam heating to head end power (HEP) in 1984 as part of its Heritage Fleet program, part of a pool of nine 11-bedroom sleeping cars.