| 21. | Mail arrives in Umuwa once per week by air mail.
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| 22. | A legal document requiring my action was posted via air mail on Dec 22.
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| 23. | Preliminary orders were rushed out verbally or by telegrams, telephone, and air mail letters.
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| 24. | In 1930, the administration invited tenders for an air mail and passenger carrier service.
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| 25. | Another historic object on Ohio Drive SW is the First Air Mail Flight Marker.
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| 26. | The first official air mail in Australia was carried by French pilot Maurice Guillaux.
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| 27. | The Pegasus appears frequently on stamps, particularly for air mail.
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| 28. | This was, at the time, the longest air mail flight anywhere in the world.
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| 29. | United States Contract Air Mail routes established between 1925 1930.
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| 30. | He consolidated the air mail routes to only three companies, forcing out their competitors.
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