This set's features the same stock number and nearly identical contents to Life-Like's 1976 Colorado Special Triple Action Freight.  The Allegheny Actionmaster is introduced in the 1977 Life-Like catalog.  The set included a Santa Fe GP38-2; Crane Car; Searchlight Car; Gondola; Box Car; Caboose; Log Dumper with logs and car; oval track plan and power pack.  The set's 1978 retail is $50, according to a Life-Like price list from that year.  It appears that 1979 is this set's final Life-Like catalog appearance.