(non RSBG) Numerous seed collecting expeditions to the Appalachian Mountains for the native plant collection at the Winkler Botanical Preserve, Alexandria, VA.
1987 to 1991
(non RSBG) Numerous seed collecting expeditions to the Appalachian Mountains for the native plant collection at the Winkler Botanical Preserve, Alexandria, VA.
(non RSBG) Numerous locations in Illinois collecting seed and herbarium specimens of rare native trees and shrubs for the Northern Illinois Woody Plant Collection at the Morton Arboretum, Lisle, IL.
