| Year | Position | Institution |
| 1947 | Assistant Professor Of Physiological Optics | Johns Hopkins Medical School 4 |
| 1949 | Assistant Professor Of Physiological Optics | Johns Hopkins Medical School 4 |
| 1950 | Associate Professor | Wilmer Institute 4 |
| 1951 | Associate Professor | Johns Hopkins University 8 |
| 1952 | Associate Professor | Johns Hopkins University 4 |
| 1953 | Associate Professor | Johns Hopkins University 4 |
| 1954 | Instructor | Wilmer Institute Johns Hopkins Hospital 4 |
| 1954 | Associate Professor | Johns Hopkins University 4 |
| 1955 | Associate Professor Of Ophthalmology | Johns Hopkins Hospital 4 |
| 1955 | Associate Professor Of Opthamology | Wilmer Institute Johns Hopkins University 4 |
| 1956 | Associate Professor Of Opthamology | Wilmer Institute Johns Hopkins University 4 |
| 1957 | Professor Of Ophthalmic Physiology And Biophysics | Johns Hopkins University 4 |
| 1958 | Professor Of Ophthalmic Physiology | Johns Hopkins University 4 |
| 1959 | Investigator | Johns Hopkins Hospital 4 |
| 1960 | Harvard Medical School 5 | |
| 1961 | Professor Of Neurophysiology | Harvard Medical School 5 |
| 1962 | Professor Of Neurophysiology | Harvard Medical School 5 |
| 1963 | Harvard Medical School 8 | |
| 1964 | Harvard Medical School 5 | |
| 1964 | Professor Of Neurophysiology | Harvard University 4 |
| 1965 | Harvard Medical School 5 | |
| 1965 | Professor Of Neurophysiology | Harvard University 4 |
| 1966 | Harvard Medical School 8 | |
| 1967 | Harvard Medical School | |
| 1968 | Harvard Medical School | |
| 1969 | Harvard Medical School | |
| 1970 | Harvard Medical School | |
| 1971 | Harvard Medical School | |
| 1972 | Harvard Medical School 5 | |
| 1973 | Robert Winthrop Professor Of Neurobiology And Department Chairman | Harvard Medical School 9 |
| 1974 | Harvard Medical School 5 | |
| 1975 | John Franklin Enders University Professor | Harvard Medical School 9 |
| 1976 | Harvard Medical School | |
| 1977 | John Franklin Enders University Professor | Harvard Medical School 5 |
| 1978 | John Franklin Enders University Professor | Harvard Medical School 9 |
| 1979 | Harvard Medical School 5 | |
| 1980 | Harvard Medical School 4 |
| Year | Role | Course |
| 1951 | Instructor | Physiology 1951 |
| 1952 | Instructor | Physiology 1952 |
| 1953 | Instructor | Physiology 1953 |
| 1954 | Instructor | Physiology 1954 |
| 1955 | Instructor | Physiology 1955 |
| 1956 | Instructor | Physiology 1956 |
| 1963 | Instructor | Neurophysiology Training Program 1963 |
| 1964 | Instructor | Neurophysiology Training Program 1964 |
| 1965 | Instructor | Neurophysiology Training Program 1965 |
| 1966 | Instructor | Neurophysiology Training Program 1966 |
| 1975 | Special Lecturer | Neurobiology 1975 |
| 1978 | Symposia And Seminars | Neurobiology 1978 |
| Year | Subject | Role |
| 1947 | Independent Investigators | |
| 1949 | Indendent | |
| 1950 | Independent | |
| 1951 | Independent Investigators | |
| 1954 | Independent Investigators | |
| 1955 | Independent | |
| 1957 | Independent | |
| 1958 | Independent | |
| 1959 | Independent | |
| 1960 | Independent | |
| 1961 | Independent | |
| 1962 | Independent | |
| 1963 | Independent | |
| 1964 | Independent | |
| 1965 | Independent | |
| 1966 | Independent | |
| 1972 | Library Readers | |
| 1973 | Independent | |
| 1973 | Library Readers | |
| 1974 | Independent | |
| 1975 | Independent | |
| 1977 | Independent | |
| 1978 | Independent | |
| 1979 | Independent | |
| 1980 | Independent |
| Year | Start Date | End Date | Subject | Role |
| 1951 | - | - | Corporation Member | |
| 1952 | - | - | Corporation Member | |
| 1953 | - | - | Corporation Member | |
| 1954 | - | - | Corporation Member | |
| 1955 | - | - | Corporation Member | |
| 1956 | - | - | Corporation Member | |
| 1957 | - | - | Corporation Member | |
| 1958 | - | - | Corporation Member | |
| 1959 | - | - | Corporation Member | |
| 1960 | - | - | Corporation Member | |
| 1961 | - | - | Corporation Member | |
| 1962 | - | - | Corporation Member | |
| 1963 | - | - | Corporation Member | |
| 1964 | - | - | Corporation Member | |
| 1965 | - | - | Corporation Member | |
| 1966 | - | - | Corporation Member | |
| 1967 | - | - | Corporation Member | |
| 1968 | - | - | Corporation Member | |
| 1969 | - | - | Corporation Member | |
| 1970 | - | - | Corporation Member | |
| 1971 | - | - | Corporation Member | |
| 1972 | - | - | Corporation Member | |
| 1973 | - | - | Corporation Member | |
| 1974 | - | - | Corporation Member | |
| 1975 | - | - | Corporation Member | |
| 1976 | - | - | Corporation Member | |
| 1977 | - | - | Corporation Member | |
| 1978 | - | - | Corporation Member | |
| 1979 | - | - | Corporation Member |