He was an Assistant United States Attorney of the District of Columbia in Washington, D.C. in 1947.
[1] Sheridan was nominated by President John F. Kennedy on August 15, 1961, to the United States District Court for the Middle District of Pennsylvania, to a new seat created by 75 Stat.
He was confirmed by the United States Senate on August 30, 1961, and received his commission the same day.
He served as Chief Judge from 1962 to 1976. and as a member of the Judicial Conference of the United States from 1972 to 1975.
[1] His service was terminated on August 23, 1976, due to his death at his residence at the Westmoreland Club in Wilkes-Barre, Pennsylvania.