United States. General Post Office & Patton, R. Post-Office, Philadelphia, December 30th, 1790. Establishments of the mails for the year 1791.
Chicago Style (17th ed.) CitationUnited States. General Post Office and Robert Patton. Post-Office, Philadelphia, December 30th, 1790. Establishments of the Mails for the Year 1791.
MLA (9th ed.) CitationUnited States. General Post Office and Robert Patton. Post-Office, Philadelphia, December 30th, 1790. Establishments of the Mails for the Year 1791.
Warning: These citations may not always be 100% accurate.