Fundamental work in developing the cyclotron and other accelerators. Early life, education prior to graduate studies at University of California at Berkeley from 1931; work with Ernest O. Lawrence at Berkeley and with Hans A. Bethe at Cornell University. Work on the 42-inch cyclotron at MIT in 1938, subsequent war work, later role in development of new high energy installations at Brookhaven National Laboratory, CERN and University of Cambridge. Also prominently mentioned are: John Paul Blewett, James Chadwick, Eric Clark, John Cockcroft, Donald Cooksey, Ernest Courant, Robley Dunglison Evans, Malcolm Henderson, Marshall G. Holloway, Robert Eugene Marshak, Edwin Mattison McMillan, Mark Oliphant, David Sloan, Hartland Snyder, Tileston, Merle Antony Tuve, Robert Jamison Van de Graaff; Associated Universities, Inc., Atoms For Peace Conference, Cavendish Laboratory, Comptes Rendus, Federation of American Scientists, Massachusetts Institute of Technology Radiation Laboratory, Ministry of Aircraft Uranium Development Committee (Great Britain), National Committee for a Sane Nuclear Policy, Office of Medical Research, United States Atomic Energy Commission, University of California at Berkeley Journal Club, and University of Rochester.