Consists of correspondence, writings, along with professional and personal papers reflecting his career in scientific research and his role as a pioneer in science education. Also included are materials regarding his investigation by the U.S. Congress House Committee on Un-American Activities, and correspondence, writings and biographical materials about his brother J. Robert Oppenheimer, theoretical physicist and director of the Manhattan Project, the U.S. government's program to develop the atomic bomb. The bulk of this collection relates to Frank Oppenheimer's professional and academic research in the fields of education and physics in the years prior to his founding of the Exploratorium, the highly innovative, hands-on science museum in San Francisco, Calif., in 1969.