Date: | 07 05 1933 |
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Description: | Two workmen use a McCormick-Deering I-12 industrial tractor to a pull Boeing U.S. mail and express airplane from a Municipal Airport hangar during the Amer... |
Date: | 1939 |
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Description: | An International U.S. D-15 mail truck used by American Airlines is parked with its rear doors open on a runway in front of an airplane. Two men are working... |
Date: | 1969 |
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Description: | This Post Office Department map identifies post offices, summer post offices, rural stations, highway post offices, Post Office sectional centers, rural de... |
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