| Year | Position | Institution |
| 1981 | University Of Minnesota 4 | |
| 1982 | University Of Minnesota 4 | |
| 1983 | University Of Minnesota 4 | |
| 1984 | University Of Minnesota 4 | |
| 1987 | University Of Minnesota 4 | |
| 1988 | University Of Minnesota 4 | |
| 1990 | University Of Minnesota 4 | |
| 1991 | University Of Minnesota 5 | |
| 1992 | University Of Minnesota 5 | |
| 1993 | University Of Minnesota 5 | |
| 1994 | University Of Minnesota 5 | |
| 1995 | University Of Minnesota | |
| 2011 | University Of Minnesota 4 |
| Year | Role | Course |
| 1981 | Faculty/Staff/Lecturer | Microbial Ecology 1981 |
| 1982 | Faculty/Staff/Lecturer | Microbial Ecology 1982 |
| 1983 | Faculty/Staff/Lecturer | Microbial Ecology 1983 |
| 1984 | Faculty/Staff/Lecturer | Microbiology 1984 |
| 1987 | Faculty/Staff/Lecturer | Microbiology: Molecular Aspects Of Cellular Diversity 1987 |
| 1988 | Faculty/Staff/Lecturer | Microbiology: Molecular Aspects Of Cellular Diversity 1988 |
| 1990 | Director | Microbiology: Molecular Aspects Of Cellular Diversity 1990 |
| 1991 | Director | Microbial Diversity 1991 |
| 1992 | Course Director | Microbial Diversity 1992 |
| 1993 | Course Director | Microbial Diversity 1993 |
| 1994 | Director | Microbial Diversity 1994 |
| 2011 | Lecturer | Microbial Diversity 2011 |
| Year | Start Date | End Date | Subject | Role |
| 1991 | - | - | Corporation Member | |
| 1992 | - | - | Corporation Member | |
| 1993 | - | - | Corporation Member | |
| 1994 | - | - | Corporation Member | |
| 1995 | - | - | Corporation Member |