Early - The first HO coaches
Belgian - Society Nationale de Chemin de Fer Belgique (SNCB)
British - British Railways (BR)
CIWL - Compagnie Internationale des Wagon Lits et des Grands Express Europeens
French - Society Nationale de Chemin de Fer Français (SNCF)
German - Deutsche Bundesbahn (DB) and Deutsche Reichsbahn (DR)
Swiss - Schweizerische Bundesbahnen or Chemin de Fer Fèdèraux Suisses or Ferrovi Federali Svizzere (SBB CFF FFS)
Irish made - coaches produced in Ireland circa 1980
Primary - the Junior Series and other starter coaches
Misc - Miscellaneous coaches