John F. Wear using portable light table in endemic pine beetle mortality study. Ochoco National Forest, Oregon.
Photo by: Peter W. Orr
Date: July 1963
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-135
Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection:
www.fs.usda.gov/main/r6/forest-grasslandhealth
