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The Boeing 247-D shown Sept. 28, 1937, this high speed, twin engine transport plane manufactured at the Boeing Aircraft Company of Seattle, Washington, was in widespread use carrying passengers, mail and express over routes of the United Airlines, Western Air Express, National Park Airways, Wyoming Air Service and Deutsch Luft Hansa in Germany. These planes were flying 60,000 miles -- equivalent to twice around the world -- every day. It had a wing span of 74 ft., overall length of empty weight of 8,940 lbs., and carried a useful 4,770 lbs. The maximum speed was 202 mph, cruising speed at 75% horsepower at 12,000 ft., 189 mph, and cruising range at 75% power at 8,000 ft., 750 mi.