| Year | Position | Institution |
| 1919 | Assistant Professor Of Botany | Columbia University 4 |
| 1920 | Assistant Professor Of Botany | Columbia University 4 |
| 1921 | Assistant Professor Of Botany | Columbia University 4 |
| 1923 | Assistant Professor Of Botany | Barnard College 4 |
| 1924 | Associate Professor Of Botany | Barnard College 4 |
| 1924 | Assistant Professor Of Botany | Barnard College Columbia University 4 |
| 1926 | Assistant Professor Of Botany | Barnard College 4 |
| 1926 | Assistant Professor Of Botany | Columbia University 4 |
| 1928 | Assistant Professor Of Botany | Columbia University 4 |
| Year | Role | Course |
| 1924 | Instructor | Botany 1924 |
| 1926 | Instructor | Botany 1926 |
| Year | Subject | Role |
| 1919 | Botany | |
| 1920 | Botany | |
| 1921 | Botany | |
| 1923 | Botany | |
| 1924 | Botany | |
| 1926 | Botany | |
| 1928 |
| Year | Location |
| 1924 | new york, ny |