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Alternative Title:Seven-Twenty: February 1940
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Edition:Vol. 40, No. 2
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Abstract:Seven-Twenty was a monthly magazine first issued in 1938 devoted to activities of the Civil Aeronautics Authority in the field and in the Washington office. The newsletter was a "reminder that there are 30 x 24 = 720 hours per month to work, sleep and play, and it is the intent of this periodical to assist us all in the enjoyment of at least the first and last".
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