Ike Hastings, Phillip C. Johnson, William D. Bedard. Horsefly Unit. Southern Oregon Northern California control project.
Photo by: F.P. Keen Date: August 1929
Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, F. Paul Keen Collection; La Grande, Oregon. Image: FPK-364
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 related historical information see: www.treesearch.fs.fed.us/pubs/21476 Wickman, Boyd E. 2005. Harry E. Burke and John M. Miller, pioneers in Western forest entomology. General Technical Report. PNW-GTR-638. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 163 p.