Laboratory set-up for photographing insects in stereo. Shown is the focusing stage and the tilting platform used to produce the two different angles of view. Sellwood Lab. Portland, Oregon.
Photo by: R.B. Pope Date: 1956
Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Portland Station Collection; La Grande, Oregon. Image: PS-1332
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.