United Air Lines Boeing 377 Stratocruiser  

NC31231, 1950, Via Ed Coates Collection. Notes: In 1949, United acquired a fleet of seven Boeing Stratocruisers, specifically for the Hawaii to mainland routes.  Passengers loved them - they were fitted with a full cocktail bar aft.  This was the last one (delivered in January of 1950) and was named "Mainliner Kano".   Unfortunately for UAL, these magnificent airliners were costly to operate and only profitable on long international segments. As a result, the fleet was sold to BOAC in 1954, this one becoming  G-ANUC.