Private practice, New York City, since 1958. Associate firm Webster, Sheffield, Fleischman, Hitchcock & Crystie, 1957-1959, 61-65. Assistant counsel New York State Commission Investigation, 1959-1961.
Counsel to Mayor John Lindsay, New York City, 1966. Chairman New York City Planning Commission, 1966-1973. Partner firm Webster and Sheffield, 1973-1991, Mudge Rose Guthrie Alexander & Ferdon, New York City, 1991-1995.
Member Metropolitan Transportation Authority, 1968-1978. Partner Hollyer, Brady, Smith, Troxell, Barret, Hines & Mone LLP, New York City, since 1995. Member New York City Health and Hospitals Corporation, 1973-1978.
Director Brooklyn Union Gas Company, Independence Savings Bank.