Private practice, Johnstown, New York, 1812-1813
Private practice, Canajoharie, New York, 1813-1819
District attorney, Montgomery County, New York, 1819-1821
U.S. representative from New York, 1821-1823
Private practice, Albany, New York, 1823-1825
Minister to Mexico, U.S. Department of State, 1852-1853
Private practice, Omaha, Nebraska, 1853-1861
Writer, Rochester and Geneseo, New York, 1861-1872
Writer, Utica, New York, 1872-1874