"Air Age Debut: Introducing new features of speed, comfort and operating efficiency to air travelers is United Airlines' four-engined, five-mile-a-minute Mainliner 300 (Douglas DC-6), accommodating up to 52-56 passengers plus 6000 pounds of cargo. Airport scenes such as this emphasize the immensity of the new luxury airliners with their 117 ½ foot wing span and 100 ½ foot length." (United Air Lines Photograph)
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