Architect, site planner General Houses, Inc., Chicago, 1932-1935. Consultant Mayor’s Committee on City Planning, New York City, 1935-1938. Associate city planner New York City Department Planning, 1938-1942.
Consultant Chicago Plan Commission, 1941. Senior housing specialist National Housing Agency, 1942-1943. Research associate Committee on Hygiene of Housing, 1943.
Planning consultant Chicago Housing Authority, 1943-1944, Cleveland Planning Commission, 1943-1948. Private practice architecture and planning, New York City, 1946-1970. Director, planning consultant Hancock Little Calvert, Inc., 1970-1974.
Critic-at-large architecture, planning for radio station Way of New York City, 1966. Director Pantheon Books, Inc., 1943-1963. Adjunct Professor urban planning New York University Graduate School Public Administration, from 1944.
Lecturer, critic New School for Social Research, Yale, Pratt Institute. Lecturer on city planning under Fulbright program Germany, Norway, 1954. A.W. Mellon distinguished visiting professor Carnegie Institute Technology, Pittsburgh, 1960-1961.
Director Citizens Union, New York City, Washington Square Association, New York City, vice president, from 1967. Chairman, Greenwich Village Community Planning Board, 1950-1956. Board of directors Citizens Housing and Planning Council, Encampment for Citizenship.
Board directors Vinmont Foundation, from 1947, president, 1964-1971, treasurer, from 1971. Member Harvard Graduate School Design Alumni Council, 1959-1966, president, 1961-1964.