| Year | Position | Institution |
| 1957 | University Of Vermont 4 | |
| 1960 | Indiana University 4 | |
| 1960 | Botany Department Indiana University 4 | |
| 1963 | Department Of Botany University Of California 4 | |
| 1963 | Assistant Professor Of Botany | University Of Vermont 4 |
| 1964 | Department Of Botany University Of Vermont 4 | |
| 1964 | Assistant Professor Of Botany | University Of Vermont 4 |
| 1965 | Assistant Professor Of Botany | University Of Vermont 8 |
| 1966 | University Of Vermont 4 | |
| 1967 | Assistant Professor Of Botany | University Of Vermont 8 |
| Year | Role | Course |
| 1957 | Student | Botany 1957 |
| 1960 | Laboratory Assistant | Botany 1960 |
| 1963 | Instructor | Marine Botany 1963 |
| 1964 | Instructor | Marine Botany 1964 |
| 1965 | Instructor | Marine Botany 1965 |
| 1966 | Special Lecturer | Marine Botany 1966 |
| 1967 | Instructor | Marine Botany 1967 |
| Year | Subject | Role |
| 1960 | Research Assistants | |
| 1963 | Independent | |
| 1964 | Independent | |
| 1965 | Independent | |
| 1967 | Independent |