Europe: Air Mail Routes] Carte des lignes postales aeriennes internes et internationales Europe pubilee par le Bureau International de l'Union postale universelle Berne, Avril 1937 - Barry Lawrence Ruderman Antique Maps Inc.
Airline Maps
Semi-OK Boomer on Twitter: "@antartica81 @guywalters Was wondering why the big gap over West Africa then I worked it out - that was the year British Caledonian started and it had the
British Caledonian: the doughty airline that invented business class – and five more forgotten UK carriers
routemaps
British Caledonian Airways route maps & DC-10 ad - 1977 | Flickr