Abstract The Ray Penn papers consist two document boxes of textual, photographic, and physical materials from 1954-1983 (bulk 1960-1975), relating mostly to the administrative and historical aspects of Radiation, Inc.’s business throughout this time period. Radiation, Inc. and its engineers made major contributions to technological developments of the early U.S. Space Race and wireless communications projects. The company and its employees were also a major foundation for the growth and development...