| Year | Position | Institution |
| 1948 | Graduate Assistant | Northwestern University 4 |
| 1949 | Graduate Assistant | Northwestern University 4 |
| 1950 | Northwestern University 8 | |
| 1951 | Northwestern University 8 | |
| 1953 | Instructor In Zoology | Carleton College 4 |
| Year | Role | Course |
| 1948 | Student | Zoology 1948 |
| 1949 | Student | Embryology 1949 |
| 1950 | Laboratory Assistant | Embryology 1950 |
| 1951 | Laboratory Assistant | Embryology 1951 |
| Year | Subject | Role |
| 1950 | Research Assistants | |
| 1951 | Research Assistants | |
| 1953 | Independent Investigators |