- 1932[subject unknown]Independent
- 1934[subject unknown]Independent
- 1938[subject unknown]Independent
- 1939[subject unknown]Independent
- 1939[subject unknown]Independent
- 1940[subject unknown]Independent
- 1947[subject unknown]Independent Investigators
- 1948[subject unknown]Independent
- 1949[subject unknown]Indendent
- 1951[subject unknown]Independent Investigators
- 1938[subject unknown]Friday Evening Lecturer