Scope and Contents ‘Lecture Programme (Dr Field)’. File contains correspondence and papers concerning lectures delivered, October - November 1969, as part of the sesquicentenary celebrations, including lists; correspondence between Jack Ratcliffe (President) and those chairing lectures; letters of thanks etc. Lecturers included Fred Hoyle, Antony Hewish, Francis Crick, J C Kendrew, Max Perutz, R C W Morrish, G Porter, W A H Rushton, O R Frisch, Sir Edward Bullard, William Hawthorne, W H Thorpe and D H...