United States Post Office Department. creator United States General Post Office. mixed material monographic eng 5 Handwritten transcript of a letterbook of (1789 November 28-1805 March 15) containing copies of letters by postmasters general Gideon Granger, Joseph Habersham, Samuel Osgood, and Timothy Pickering; chart (1807) made by Gideon Granger; accounts (1804-1805, 1807) for the post office at Hamilton, Ohio; record book (1899 April 11-1906 September 25) of the post office at Cavetown, Md.; and essay (1912) entitled, Annals of the Post Office Department, 1607-1775, by E.F. Brown. Open to research. United States Office of the Postmaster General created by Continental Congress, July 26, 1775; United States General Post Office created by Congress, September 22, 1789, under the direction of the Postmaster General; United States Post Office Department created as government agency by Congress, February 20, 1792; reorganized as United States Postal Service in 1970. Collection material in English. Forms part of: Miscellaneous Manuscripts collection. Brown, E. F Granger, Gideon 1767-1822 Correspondence Habersham, Joseph 1751-1815 Correspondence Osgood, Samuel 1748-1813 Correspondence Pickering, Timothy 1745-1829 Correspondence Cavetown Post Office (Cavetown, Md.) Hamilton Post Office (Hamilton, Ohio) United States. Postmaster General. Postal service Maryland Cavetown Postal service Ohio Hamilton Postal service United States History mm 80005610 Open to research. DLC 800115 20260227111703.0 mm 80005610