- 1928[subject unknown][role unknown]
- 1929[subject unknown][role unknown]
- 1931[subject unknown]Independent
- 1932[subject unknown]Independent
- 1933[subject unknown]Independent
- 1934[subject unknown]Independent
- 1935[subject unknown]Independent
- 1936[subject unknown]Independent
- 1961[subject unknown]Beginning
- 1962[subject unknown]Independent
- 1963[subject unknown]Independent
- 1964[subject unknown]Independent
- 1965[subject unknown]Independent
- 1966[subject unknown]Independent
- 1967[subject unknown]Independent
- 1968[subject unknown]Independent
- 1973[subject unknown]Independent
- 1974[subject unknown]Independent
- 1975[subject unknown]Independent
- 1976[subject unknown]Independent Investigators
- 1977[subject unknown]Independent
- 1980[subject unknown]Other Research Personnel