| Year | Position | Institution |
| 1953 | Research Assistant | University Of Pennsylvania 4 |
| 1955 | Instructor In Zoology | University Of Maine 4 |
| 1956 | Instructor In Zoology | University Of Maine 4 |
| 1958 | Assistant Professor Of Physiology | Boston University School Of Medicine 4 |
| 1959 | Associate Professor Of Biology | American University 4 |
| 1960 | Associate Professor Of Biology | American University 4 |
| 1961 | Associate Professor Of Biology | American University 4 |
| 1963 | Professor Of Biology | American University 4 |
| 1990 | University Of Florida 4 | |
| 1991 | University Of West Florida 4 | |
| 1992 | University Of West Florida 4 | |
| 1993 | University Of West Florida 4 | |
| 1994 | University Of West Florida 4 | |
| 1995 | University Of West Florida 8 | |
| 1996 | University Of West Florida 8 | |
| 1997 | University Of West Florida 4 |
| Year | Subject | Role |
| 1953 | Independent Investigators | |
| 1955 | Independent | |
| 1956 | Independent | |
| 1958 | Independent | |
| 1959 | Independent | |
| 1960 | Independent | |
| 1961 | Independent | |
| 1963 | Independent | |
| 1990 | Library Readers: Desks | |
| 1991 | Principal Investigators | |
| 1992 | Principal Investigators | |
| 1993 | Pricipal Investigators | |
| 1994 | Pricinipal Investigators | |
| 1995 | Pricinipal Investigators | |
| 1995 | Library Readers | |
| 1996 | Principal Investigators | |
| 1996 | Library Readers | |
| 1997 | Library Readers |