The Iams Company
Mrs. Virginia Kettering
The Kettering Fund
The Wallace Foundation
The Niehaus Fund
Four Seasons Garden Club
The Tait Foundation
Iddings Foundation
The Dayton Foundation
The Daughters of the American Revolution
The Junior League of Dayton
Ohio Arts Council
Ohio Humanities Council
Ohio EPA Environmental Education Fund
Levin Family Fund
L.W. Milby Co.
John & Mary Wolf
CitiParks
Waste Management Inc.
Plating Technology
Double Tree Hotel
North Dixie Hardware
The FRIENDS of Dayton Society of Natural History
Toyota
Tom Smith Industries
Michaels' Mowers
Five Rivers Metro Parks
The Miami Conservancy District
Wright State University Departments of Anthropology, Geophysics
Marianist Environmental Education Center
Greg and Donna Herrin