Table of post offices in the United States on the first day of January, 1851, arranged in alphabetical order, and exhibiting the states, territories, and counties in which they are situated, with the names of the post masters; also an appendix, containing a list of the post offices, arranged by states and counties, to which is added a list of the offices established, changed, or discontinued to May 31
United States. Post Office Dept; Making of America Project