1 son, John Parker; married second, Charlotte Leeper, October 1, 1938. Children—David Parker, Nancy Leeper (deceased). Engineer, Chuquicamata, Chile, 1922-1925.
Editor technical publications, New York City, 1926. Independent exploratory research in Iceland, 1927. Editor in New York City, 1928-1929.
Exploratory research in subarctic Canada, 1929. Writer on geografic subjects, 1929-1931, executive secretary Explorers’ Club, 1931. Expedition to Amazon and Orinoco basins for Carnegie Institution of Washington, to study fluctuations of earth’s magnetic field, 1931-1933.
Research technician for National Resources Committee, Washington, 1934-1935. Planning consultant, member Executive Board P.R. Reconstrn. Administration, San Juan, 1935-1936.
Consultant O.Q.-M.G., United States Army, on clothing and equipment for jungle warfare, 1942-1944. Adviser, member United States Army Engineers’ expedition to Rio Orinoco and Rio Negro, 1943. Consultant United States Army Air Force, 1944.
Special representative of F.E.A. in Liberia, special assistant to the United States Minister in Liberia, and special agent of the United States Comml Company, 1944-1946. Consultant commission on geophysics and geography National Research and Development Board, 1949-1951. Visiting lecturer geography U. Maryland., spring 1948.
Professor geography, department chairman geography and geology U. Delaware, 1949-1956. Organized areas study course in P.R., 1952. Conducted course in geography United States Navy War College, Newport, Rhode Island, 1952.
Consultant economics development, Monagas, Venezuela, 1955. Consultant Department of State, Commonwealth of P.R., 1956-1969, Commonwealth of P.R. Planning Board, 1958. Weekly columnist on world affairs, Island Times, San Juan, 1955-1964.
Survey economics development Peruvian Amazon, 1965. Lecturer science subjects.
Author: Journey to Mansos, 1938. Highroad to Adventure, 1941. Chile, Land of Progress, 1941.
Stefansson, Prophet of the North, 1941. New Worlds Emerging, 1949. Transformation, The Story of Modern Puerto Rico, 1955.
The Amazon, A New Frontier, 1944. Puerto Rico, 1956