Papers, including copies of outgoing correspondence (1955-85) concerning research articles on aeronomy and physics of the ionsphere, radio wave propagation and rocket and satellite studies of the upper atmosphere submitted for publication in the "Transactions" of the IRE Professional Group on Antennas and Propigation and "Radio Science" the journal of the U.S. National Committee of the International Radio Union and the "Journal of Atmospheric and Terrestrial Physics (1965-82), program arrangements for meetings of the Institute of Electrical and Electronics Engineers and Institute of Radio Engineers; joint research projects; and graduate student applications, appointments and letters of recommendation. Subject files relate to contracts, laboratories, rocketry, meetings, experiments, reports and publications about programs, objectives and students for LIDAR studies, wave propagation and diffraction (1946-1964), International Quiet Sun Year research (1957-1968), and polar (1967-1978) and space shuttle (1970-1979) research sponsored by the American Geographical Union (1967-1977), Committee on Space Research (COSPAR, 1961-1985), Institute of Electrical and Electronics Engineers (IEEE, 1962-1971), Institute of Radio Engineers (IRE, 1946-1964), Inter-Union Commission on Solar and Terrestrial Physics (IUCSTP, 1966-1979), National Academy of Sciences (1963-1967), National Aeronautics and Space Administration (1960-1986), National Science Foundation (1963-1982), and International Scientific Radio Union (URST, 1956-1980). This series includes files on committees and research at Cambridge (1955-1958), Penn State (1952-1962), Illinois Electrical Engineering Dept. (1966-1985) and NASA Contractors (1966-1986).