BOAC World Air Routes Western HemisphereOriginal vintage travel advertising poster for BOAC World Air Routes Western Hemisphere featuring a pictorial map with colourful illustrations of people in national dress, places of historic interest, mountain ranges, animals and ships at sea with a decorative compass point on the Atlantic Ocean, the airline route marked between the cities around the world with the Tropic of Cancer, Equator and Tropic of Capricorn lines over the continents and the