Member Potomac Planning Task Force, Department Interior, 1965-1967. Chairman Frederick Law Olmsted Sesquicentennial, 1972, Sugarloaf Regional Trails, Maryland, from 1974, United Nations Housing and Planning Mission to Zambia, 1965, National Trust Honor Awards Jury, 1982. Consultant on environmental, habitat conferences United Nations, 1965-1978.
Member Montgomery County Historic Preservation Commission, 1979-1981. Adviser National Association Olmsted Parks, 1980-1986. Served with Army of the United States, 1943-1945.
Fellow United States International Council Monuments and Sites. Member American Institute of Architects (honorary, Medallist 1978, honorary award with Capitol master plan group, 1986), Italian Town Planning Institute (honorary), American Institute Certified Planners, International Federation for Housing and Planning (member council from 1977). Clubs: Cosmos (Washington).
14 W. Hamilton St. (Baltimore).