File:1920. Scouting and mapping areas of beetle kill from a high point. Jenny Creek, Oregon. (32812484423).jpg

Scouting and mapping areas beetle kill from a high vantage point. Jenny Creek, Oregon.

"The estimator, equipped with binoculars and a topographic map of the area 'gridirons' the country by traveling along the ridges or open valleys or wherever an unobstructed view may be had of most of the timbered areas. At selected points along the route, the opposite slopes or areas visible and not more than 2 miles away are viewed with the naked eye or with binoculars, and the red, sorrel, and faded trees are counted. These are then spotted on the map within the area that has been viewed, either by dots or numbers, to indicate the number of trees that have been counted. All the country that can be viewed is covered in this manner." From: Miller, J.M. and F.P. Keen. 1960. Biology and Control of the Western Pine Beetle: A Summary of the First Fifty Years of Research. USDA. 381 p.

Photo by: J.E. Patterson Date: June 1920

Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology Collection; La Grande, Oregon. Image: BUR-2251

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: <a href="https://www.treesearch.fs.fed.us/pubs/21476" rel="nofollow">www.treesearch.fs.fed.us/pubs/21476</a> 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.

For related historical program information see: <a href="https://archive.org/details/AerialForestInsectAndDiseaseDetectionSurveysInORandWA19472016TheSurveyHighRes" rel="nofollow">archive.org/details/AerialForestInsectAndDiseaseDetection...</a> 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.

For additional historical forest entomology photos, stories, and resources see the Western Forest Insect Work Conference site: <a href="http://wfiwc.org/content/history-and-resources" rel="nofollow">wfiwc.org/content/history-and-resources</a>