In 1951, the airline industry was exploring new aircraft in the last days of propellor driven passenger travel. Pan-Am, always an innovator, started flying their Boeing B-337 Stratocruisers in the late 40’s. A double decked plane with sleeping berths and a lounge – the B-337 flew most of Pan-Am’s most famous routes. To celebrate the craft Pan-Am published a series of posters that highlighted destinations and the craft itself. This one is from 1951 and is for Glasgow, Scotland.