| 2025 | Alan Hastings and Kay Dewey | |
| 2024 | Ralph Algazi and George Tchobanoglous | |
| 2023 | Carole Joffe | |
| 2022 | Kenneth Burtis | |
| 2021 | Thomas Rost | |
| 2020 | Linda Morris | |
| 2019 | Dr. Robert E. Page | |
| 2018 | Robert Cardiff | |
| 2017 | JaRue Manning | |
| 2016 | Fred Block and William Jackson | |
| 2015 | Robbin Thorp | |
| 2014 | Tom Cahill | |
| 2013 | Eldridge Moores | |
| 2012 | Alex F. McCalla | |
| 2011 | Charles E. Hess |