Exchange of letters between Wilkins and Alistair Cameron Crombie, Oxford University, 1977, on possible sources for Wilkins’ research for his lecture series, ‘Science and the divine’, given as the Eddington memorial lectures, Cambridge, Apr-May 1978, with published articles by Crombie: ‘The future of biology: the history of a program’, offprint from Federation Proceedings, Sep-Oct 1966; ‘Historical commitments of biology’, offprint from The British Journal for the History of Science, Dec 1966; ‘The mechanistic hypothesis and the scientific study of vision: some optical ideas as a background to the invention of the microscope’, offprint from Proceedings of the Royal Microscopical Society, 1967; ‘Some attitudes to scientific progress: ancient, medieval and early modern’, photocopy from History of Science, 1975; ‘Marin Mersenne (1588-1648) and the seventeenth century problem of scientific acceptability’, offprint from Physis: Rivista Internazionale di Storia della Scienza, 1975; typescript draft, ‘Styles of scientific thinking in medieval and early modern Europe’