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Title
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First air mail postal delivery
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Format
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photograph: print
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Date
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1911-09-23
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Description
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The first air mail route in the US was a flight of six miles over Hempstead Plains on Long Island. Postmaster General Frank Hitchcock is shown handing pilot Earle Ovington a light bag of mail. von Karman Papers.
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Title
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Carl Sagan
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Format
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photograph: negative
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Date
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1972
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Series
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History of Science
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Description
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Astronomers