The Certificate of Appreciation was initiated in 1981. It is presented to recipients of the Silver Passenger Pigeon award who continue to provide exceptional service to the WSO. A list of receipients is below.
Certificate of Appreciation Recipients
| Carl Schwartz | 2022 |
| Mark Peterson | 2016 |
|
Bob Domagalski Christine Reel |
2015 |
|
Jeff Baughman Tom Schultz |
2011 |
| Tom Soulen | 2008 |
| Bettie Harriman | 2007 |
| Noel Cutright | 2001 |
|
Alex Kailing Daryl Tessen |
1996 |
| Norval R. Barger | 1994 |
|
Charles Gilmore Samuel D. Robbins, Jr. |
1993 |
|
Carl G. Hayssen, Jr. Dr. Howard Young |
1992 |
| William Hilsenhoff | 1989 |
| Mary Donald | 1985 |
| Charles Kemper | 1983 |
| Walter Scott | 1982 |
| Ed Peartree | 1981 |
