Private secretary, Gov. William Seward, New York, 1839-1842
Military secretary, Gov. William Seward, New York, 1842-1845
Private practice, New York City, 1843-1845, 1854-1862
Private practice, Auburn, New York, 1845-1854
Court reporter, U.S. Circuit Courts for the Second Circuit/publisher, Blatchford`s Circuit Court Reports, 1852-1888
Trustee, Columbia College, 1867
Allotment as Circuit Justice:
Second Circuit, April 3, 1882-July 7, 1893