As an undergraduate and graduate at the University of Glasgow, William Cochrane kept a very full record of the lectures he attended and the class or laboratory exercises he performed, with dates, and usually the names of the professors and lecturers concerned. These provide a useful account of the courses offered and the education available at the time. There are similar full notes of courses attended and of lectures given by Cochrane on radar during the 1939-1945 World War. Substantial but less well-ordered notes survive for lectures at Imperial College, London, before and after the war, and for his period at St Thomas's. The correspondence is slight but includes some letters from M. von Laue , 1936-1937.
- Biographical and personal papers 1932-1959;
- School notebooks 1921-1925;
- Glasgow University lecture notes 1926-1943;
- Imperial College notes 1934-1957;
- War service records 1940-1945;
- St Thomas' Hospital records 1971;
- Publications and broadcasts 1947-1964;
- Correspondence 1936-1961.