Leonard Roeber (deceased), Boise National Forest, Idaho City, ID

David Young, Pacific Southwest Research Station, Redding, CA

Richard E. Miller, Forestry Sciences Laboratory, Olympia, WA

Greg Ruark, USDA National Agroforestry Center, Normal, AL

Special thanks to the Coeur d'Alene Nursery and to the equipment fabrication shop and publications staff at MTDC.