Private practice, Pittsburgh, Pennsylvania, 1837-1848
City councilman, Pittsburgh, Pennsylvania
City attorney, Pittsburgh, Pennsylvania, 1845
Private practice, Alexandria, Virginia, 1848-ca. 1861
Private practice, Washington, D.C., ca. 1861-1863, 1885-1905
Nominated to Supreme Court of the District of Columbia, March 10, 1863; confirmed, March 12, 1863; Senate voted to reconsider confirmation, March 13, 1863; no subsequent Senate vote