| Year | Position | Institution |
| 1964 | Usphs Postdoctoral Fellow | University Of Maryland 4 |
| 1965 | Usphs Post-Doctoral Fellow | University Of Maryland School Of Medicine 4 |
| 1966 | Research Associate | University Of Maryland Medical School 4 |
| 1970 | Assistant Professor | Rutgers State University Of New Jersey 4 |
| 1971 | Assistant Professor | Rutgers State University 4 |
| 1972 | Associate Professor | Rutgers University 4 |
| 1973 | Associate Professor | Juniata College 4 |
| 1975 | Associate Professor | Juniata College 4 |
| Year | Subject | Role |
| 1964 | Independent | |
| 1965 | Independent | |
| 1966 | Independent | |
| 1970 | Independent | |
| 1971 | Independent | |
| 1972 | Independent | |
| 1973 | Independent | |
| 1975 | Independent |