Minutes of the Newton Letters Committee Meetings held; 1. 15 March 1939 2. 23 May 1939 3. 12 March 1947 4. 16 December 1949 5. 8 March 1951 6. 6 June 1952 7. 13 January 1954 8. 22 January 1958 9. 4 July 1958 10. 25 March 1959 11. 22 June 1960 12. 28 February 1961 13. 27 June 1961 14. 17 October 1961 1939-1961