Private practice, Newburyport, Massachusetts, 1763-1771, 1773, 1775
Selectman, Newburyport, Massachusetts, 1771-1772, 1774, 1776
Massachusetts militia major, 1776
Private practice, Boston, Massachusetts, 1777-1778, 1779-1781
State representative, Massachusetts, 1778, 1780-1782
Delegate, Massachusetts constitutional convention, 1780
Delegate, Continental Congress, 1782-1783
Judge, Court of Appeals in Cases of Capture, 1783-
Member, commission on the boundary between Massachusetts and New York, 1784
State senator, Massachusetts, 1784-1785