- 1965[subject unknown]Research Assistants
- 1968[subject unknown]Corporation Member
- 1969[subject unknown]Corporation Member
- 1970[subject unknown]Corporation Member
- 1971[subject unknown]Corporation Member
- 1972[subject unknown]Corporation Member
- 1973[subject unknown]Corporation Member
- 1974[subject unknown]Corporation Member
- 1975[subject unknown]Corporation Member