Heliport monitor Jack Dunn, Washington State Department of Natural Resources, with aerial photos of spray area. Western hemlock looper control project in southwest Washington.
Photo by: Jim Hughes Date: July 1963
Credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection. Collection: Region 6 Forest Health Protection historic files, located at the Mt. Hood National Forest in Sandy, Oregon. Image: Q-1
For additional information about this project see: archive.org/details/CAT10507172 Buffam, P.E. 1963. Plan for the technical direction of the 1963 western hemlock looper control project in southwest Washington. USDA Forest Service, Pacific Northwest Region, Division of Timber Management, Insect and Disease Control Branch. 20 p.