Sources of historical information on post offices, postal employees, mail routes, and contractors.

Bibliographic Details
Corporate Author:	United States Postal Service
Format:	Government Document Book
Language:	English
Published:	[Washington, D.C.] : U.S. Postal Service, [2004]
Series:	Publication (United States Postal Service) ; 119.
Subjects:	Postal service > United States > History > Sources. Postal service > United States > Bibliography.
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