A215 - Correspondence and other papers of Professor James Chadwick, and minutes of meetings of 156" Cyclotron Progress Committee - (1936)-(1939), (1948)-(1952)

Correspondence and other papers of Professor James Chadwick, and minutes of meetings of 156" Cyclotron Progress Committee. Includes calendars of letters and by Dr C. David King and a photograph of a cyclotron magnet