Bachelor in Geography, Columbia University, 1967; postgraduate cartography, University of Michigan, 1967.
Cartographer, American Geography Society, 1959-1967;
assistant map curator, American Geography Society, 1968-1969;
acting director, American Geography Society, 1973;
head cartographic department, American Geography Society, 1969-1976;
consultant cartography and graphics, Regional and National Physical Planning Project, United Nations Development Program, Saudi Arabia, 1977;
cartographer cartographic unit department conference services, United Nations, 1978-1981;
chief cartographer department conference services, United Nations, since 1981;
secretary, United Nations Iraq-Kuwait Boundary Demarcation Commission, since 1991. Lecturer cartography Columbia University, 1973-1988, Hunter College, CUNY, 1973, 88-. Consultant Columbia University, Fund for the Assistance Private Education, Allen Lee, Michigan State University, New York State SeaGrant Program, Noyes Publications, Newberry Library, Time-Life Books Inc., Water Information Center Inc., Worldmark Encyclopedia, Yale University Press.
United States representative International Cartographic Association, 1972-1978. Secretary Iraq-Kuwait Boundary Demarcation Commission, since 1991.
Member American Congress on Surveying and Mapping, International Society for History of Cartography, New York Map Society (secretary, editor Rhumb Line newsletter 1987), Carto-Philatelists (president).
Married Chih Chwen Huang, June 5, 1965. Children: Tas Ling, Tika Liang.