- 1962Instructor In Pathobiology
- 1963Assistant Professor
- 1959Research Fellow
- 1960[position unknown]
- 1959Assistant Professor Of Pathobiology
- 1960Assistant Professor Of Pathobiology
- 1961Assistant Professor Of Pathobiology
- 1962Assistant Professor Of Pathobiology
- 1974Associate Professor
- 1976Professor Of Epidemiology
- 1954Professorof Parasitology
- 1957Professor Of Pathology
- 1959Professor Of Pathobiology
- 1959[position unknown]
- 1966[position unknown]
- 1967[position unknown]
- 1968[position unknown]
- 1969[position unknown]
- 1970[position unknown]
- 1971[position unknown]
- 1972[position unknown]
- 1973[position unknown]
- 1974[position unknown]
- 1975[position unknown]
- 1976[position unknown]
- 1977[position unknown]
- 1978[position unknown]
- 1979[position unknown]
- 1980[position unknown]
- 1919[position unknown]
- 1920[position unknown]