Assistant biologist K.M. Paproke checks DDT spray deposit on oil-sensitive dye cards. Western spruce budworm control project. Goldendale, Washington.
Photo by: Peter W. Orr Date: June 1962
Credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection. Source: Division of Timber Management, Insect and Disease Control Branch Collection; Regional Office, Portland, Oregon. Image: ID-77
For more information about this spray project, see: Orr, Peter W. 1962. Plan for the Technical Direction of the 1962 Spruce Budworm Control Project in Washington. USDA Forest Service, Pacific Northwest Region, Division of Timber Management, Insect and Disease Control Branch. 25 p. archive.org/details/CAT11099640
For further information about historical western spruce budworm activity and control projects see: Dolph, Robert E. 1980. Budworm activity in Oregon and Washington, 1947-1979. R6-FIDM-033-1980. Portland, OR: US Dept. of Agriculture, Forest Service, Pacific Northwest Region, Forest Insect and Disease Management. 54 p.