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Description:01 47 55 00 History of the aviation, Douglas DC6. Transport, communications. Probably the 50s. Airport and control tower of Chicago. Landing of the passengers and the luggage. Inside of the desk of the flights. Coordination. Man picks up telephone, close-up letter on typewriter, seen on office workers of the airport. Women in the other office receive telegrams, fax. Secretary strikes a message, centralization of the data. Network of communication. Man enters office of coordination of the flights. Man puts message to the other whom phones then to another office. Administrative management of the flights.