Description: Walter J. Buckhorn examines field cage on ponderosa pine Dendroctonus brevicomis Lec. brood trees. Prineville, Oregon. Photo by: F.P. Keen Date: May 1932 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Portland Station Collection; La Grande, Oregon. Image: PS-125 To learn more about this photo collection see: Wickman, B.E., Torgersen, T.R. and Furniss, M.M. 2002. Photographic images and history of forest insect investigations on the Pacific Slope, 1903-1953. Part 2. Oregon and Washington. American Entomologist, 48(3), p. 178-185. For more about W.J. Buckhorn see: Furniss, M.M., 2000. Walter Julius Buckhorn (1899–1968)—Legendary Forest Entomologist, Not of the Classroom Kind. American Entomologist, 46(3), pp.133-140. For additional historical forest entomology photos, stories, and resources see the Western Forest Insect Work Conference site:
wfiwc.org/content/history-and-resources For related historical program documentation see:
archive.org/details/AerialForestInsectAndDiseaseDetection.. Johnson, J. 2016. Aerial forest insect and disease detection surveys in Oregon and Washington 1947-2016: The survey. Gen. Tech. Rep. R6-FHP-GTR-0302. Portland, OR: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. 280 p. Image provided by USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection:
www.fs.usda.gov/main/r6/forest-grasslandhealth. Date: 1 June 1932, 00:00. Source:
1932. Walter J. Buckhorn examines field cage on ponderosa pine Dendroctonus brevicomis Lec. brood trees. Prineville, Oregon.. Author:
R6, State & Private Forestry, Forest Health Protection.