These records consist primarily of administrative files of the Assistant Secretary for Research, 1987-1990, documenting his responsibility for the National Air and Space Museum, the National Museum of Natural History, the National Zoological Park, the Smithsonian Environmental Research Center, the Smithsonian Astrophysical Observatory, the Smithsonian Institution Archives, the Office of Fellowships and Grants, the Office of International Activities, the Smithsonian Tropical Research Institute, the Smithsonian Institution Libraries, and related environmental groups and projects. Only the Panama Canal Alternatives Study, 1973-1983, predates 1984. Of special interest are records documenting the closing of the Radiation Biology Laboratory in Rockville, Maryland.