Rare Route map for Imperial Airlines, the first organized UK airline with long distance flights. It existed only from 1924 to 1939 before merging with BOAC and then eventually became today's British Airways.
Imperial flew all across the British Empire as far as Australia and this map also shows the long distances flown by using 2 globes showing both sides of the world, day and night.


A wonderful detailed image and rare piece of aviation history!