USDA Forest Service - Region 2 - Rocky Mountain Region , USDA Forest Service, Bugwood.org

William M. Ciesla, Forest Health Management International, Bugwood.org

Paul E. Hennon, USDA Forest Service, Bugwood.org

Dave Powell, USDA Forest Service (retired), Bugwood.org

USDA Forest Service - Region 2 - Rocky Mountain Region , USDA Forest Service, Bugwood.org