Humber-Sommer biplane with about fifty horsepower (37 kW), and it made the journey in thirteen minutes. The world's first scheduled airmail post service took place in the United Kingdom between the London suburb of Hendon, and the Postmaster General's office in Windsor, Berkshire, on September 9, 1911. It was part of the celebrations for King George V's coronation and at the suggestion of Windham, who based his proposal on the successful experiment he had overseen in India. The service ran for just under a month, transporting 35 bags of mail in 16 flights. In the early 20s, air cargo developed rapidly because numerous entrepreneurs realized aircraft could move high value and low volume consignments much faster than the railroads and shipping companies. The first scheduled flight from London to Paris in 1919 had only one passenger, but carried leather for a shoe manufacturer and grouse for a restaurant. Cinema films were also a frequent consignment: original news’ bulletins were first carried to a central laboratory to make copies, and then distributed by air throughout Europe for their release in cinemas. Post-war years Although there were a few attempts to organize air freight airlines from the 1920s on, the first commercial airlines that were all-cargo did not emerge until after World War II. In 1945, at a conference in Havana, 57 airlines formed the International Air Transport Association. In 1948, Berlin was jointly controlled by the Western Allies and Soviet Union, although the Soviet Union held the area surrounding the city and thus land access. During the so-called Berlin Blockade, this land access was closed, and an airlift remained the only option to get increasingly urgent deliveries of food, coal, and other supplies to West Berlin. Over 330 days to 12 May 1949 a total of 2.26 million tons of cargo were airlifted to Berlin, an average of 6,800 tons a day, 80% by the US and 20% by the UK. Although freight traffic developed modestly, reaching only 800,000 tonnes worldwide by the mid-1950s, the world economy was hitting its post-war stride. Germany and Japan were emerging from their period of purgatory and were poised to take the world of business by storm, the United States was approaching the height of its economic dominance, and Western Europe had recovered from the war. In 1968, Boeing launched the four engine 747, the first wide-body aircraft. The 747 was the first aircraft capable