- 1974[subject unknown]Independent
- 1975[subject unknown]Independent
- 1976[subject unknown]Independent Investigators
- 1981[subject unknown]Independent
- 2014[subject unknown]Principal Investigator
- 2016[subject unknown]Whitman Scientist
- 2017[subject unknown]Whitman Center Scientist
Preserving and communicating the history of science at the MBL