↑ "Again, Mitchell". Time Magazine. Time. June 10, 1929. Archived from the original on May 21, 2013. Retrieved August 26, 2007. "Monthly magazine until this month called Popular Aviation and Aeronautics. With 100,000 circulation it is largest-selling of U. S. air publications." "Editor of Aeronautics is equally airwise Harley W. Mitchell, no relative of General Mitchell."
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