United States Postal Service. History of the United States Postal Service: 1775-1993.
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Chicago Style (17th ed.) Citation
United States Postal Service. History of the United States Postal Service: 1775-1993.
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MLA (9th ed.) Citation
United States Postal Service. History of the United States Postal Service: 1775-1993.
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Warning: These citations may not always be 100% accurate.