Unidad documental compuesta 32 - 'J.J. Thomson'

11 pp. typescript with manuscript corrections (and second copies of pps. 7-9 of another version); 1 offprint

Manuscript bears annotations 'Intended for 'The New Scientist' December '56 but not used as it was too long', 'Given at Brunel College, Acton, February 26 1959', 'Also A.E.I. Aldermaston May 1962'.

Also included is an offprint from the "Bulletin of the Institute of Physics*, March 1959, containing the same lecture, with a note that it was delivered to the Birmingham Branch, January 1950