@night cub: International Harvester Company disappeared as corporate name, but as their vehicles were mostly promoted, badged and sold as International (i.e. without Harvester), they didn't get a new make name when IHC became Navistar International Corporation: pre- and post 1986 vehicles are all "International trucks", not IH models and then 1986+ "International only" ones.
International Harvester shouldn't be used as make name, in fact.