Stagnated ponderosa pine stand. This is a large even-age stand that resulted from a devastating pine butterfly kill in the 1890s. Cedar Valley, Yakima Indian Reservation, Washington.
Photo by: Ken H. Wright and R.G. Mitchell
Date: September 1, 1961
Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection.
Collection: Portland Station Collection; La Grande, Oregon.
Image: PS-2988
For additional historic forest entomology photos, stories, and resources see the Western Forest Insect Work Conference site:
wfiwc.org/content/history-and-resources Image provided by USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection:
www.fs.usda.gov/main/r6/forest-grasslandhealth
