Tree Selection. Class 2B and Class 2D. Keen Ponderosa Pine Tree Classification. Fremont National Forest, Oregon. Photo by: Ray Filloon Date: June 1939 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Ray Filloon Collection; La Grande, Oregon. Image: Filloon-373 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...
Topics: r6, fremontnationalforest, usda, stateandprivateforestry, treeselection, region6,...
Class 4B. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Portland Station Collection; La Grande, Oregon. Image: PS-228 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...
Topics: fpkeen, divisionofforestinsectinvestigations, ps228, foresthealthprotection, usda,...
Class 3A. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Portland Station Collection; La Grande, Oregon. Image: PS-242 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...
Topics: fpkeen, divisionofforestinsectinvestigations, foresthealthprotection, usda, keenclassification,...
Class 3A. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology Collection; La Grande, Oregon. Image: BUR-8734 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....
Topics: divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry, bur8734, treeselection,...
Class 4C (group). Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Portland Station Collection; La Grande, Oregon. Image: PS-244 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...
Topics: divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry, foresthealth, region6,...
Tree Selection. Class 3A. Keen Ponderosa Pine Tree Classification. Fremont National Forest, Oregon. Photo by: Ray Filloon Date: June 1939 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Ray Filloon Collection; La Grande, Oregon. Image: Filloon-382 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...
Topics: r6, fremontnationalforest, usda, stateandprivateforestry, treeselection, age, region6,...
Tree Selection. Class 4D. Keen Ponderosa Pine Tree Classification. Fremont National Forest, Oregon. Photo by: Ray Filloon Date: June 1939 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Ray Filloon Collection; La Grande, Oregon. Image: Filloon-381 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...
Topics: r6, fremontnationalforest, usda, stateandprivateforestry, age, region6, forestinsectinvestigations,...
Class 4B. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Portland Station Collection; La Grande, Oregon. Image: PS-224 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...
Topics: fpkeen, divisionofforestinsectinvestigations, Keen Ponderosa Pine Tree Classifications,...
Class 4C. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Portland Station Collection; La Grande, Oregon. Image: PS-236 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...
Topics: fpkeen, divisionofforestinsectinvestigations, foresthealthprotection, usda, keenclassification,...
Class 2B. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology and Portland Station Collections; La Grande, Oregon. Image: PS-219 and BUR-8711 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...
Topics: divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry, keen, foresthealth,...
Class 4C. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Portland Station Collection; La Grande, Oregon. Image: PS-229 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...
Topics: fpkeen, divisionofforestinsectinvestigations, foresthealthprotection, usda, keenclassification,...
Class 1A. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Portland Station Collection; La Grande, Oregon. Image: PS-231 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...
Topics: fpkeen, divisionofforestinsectinvestigations, class1a, foresthealthprotection, usda,...
Tree Selection. Class 4D. Keen Ponderosa Pine Tree Classification. Fremont National Forest, Oregon. Photo by: Ray Filloon Date: June 1939 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Ray Filloon Collection; La Grande, Oregon. Image: Filloon-370 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...
Topics: r6, fremontnationalforest, usda, stateandprivateforestry, treeselection, age, region6,...
Class 1A. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology Collection; La Grande, Oregon. Image: BUR-8701 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....
Topics: divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry, treeselection, age,...
Class 3C. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Portland Station Collection; La Grande, Oregon. Image: PS-222 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...
Topics: divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry, foresthealth, region6,...
Class 3B. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Portland Station Collection; La Grande, Oregon. Image: PS-235 and BUR-8735 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...
Topics: divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry, bur8735, foresthealth,...
Tree Selection. Class 4A. Keen Ponderosa Pine Tree Classification. Fremont National Forest, Oregon. Photo by: Ray Filloon Date: June 1939 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Ray Filloon Collection; La Grande, Oregon. Image: Filloon-378 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...
Topics: r6, fremontnationalforest, usda, stateandprivateforestry, treeselection, age, region6,...
Tree Selection. Class 4C. Keen Ponderosa Pine Tree Classification. Fremont National Forest, Oregon. Photo by: Ray Filloon Date: June 1939 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Ray Filloon Collection; La Grande, Oregon. Image: Filloon-372 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...
Topics: r6, fremontnationalforest, usda, stateandprivateforestry, treeselection, age, region6,...
Tree Selection. Class 1A. Keen Ponderosa Pine Tree Classification. Fremont National Forest, Oregon. Photo by: Ray Filloon Date: June 1939 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Ray Filloon Collection; La Grande, Oregon. Image: Filloon-374 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...
Topics: r6, fremontnationalforest, usda, stateandprivateforestry, treeselection, age, region6, class1a,...
Class 4D and 4C. Keen Ponderosa Pine Tree Classification. Camp Sherman, Oregon. Photo by: F.P. Keen Date: August 3, 1939 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Portland Station Collection; La Grande, Oregon. Image: PS-415 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...
Topics: divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry, treeselection, tree, keen,...
Class 3C and 2C. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology and Portland Station Collections; La Grande, Oregon. Image: PS-239 and BUR-8716 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...
Topics: divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry, bur8716, foresthealth,...
Tree Selection. Class 4B. Keen Ponderosa Pine Tree Classification. Fremont National Forest, Oregon. Photo by: Ray Filloon Date: June 1939 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Ray Filloon Collection; La Grande, Oregon. Image: Filloon-371 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...
Topics: r6, fremontnationalforest, usda, stateandprivateforestry, treeselection, tree, region6,...
Class 3A or Class 4A. Tree Selection. Keen Ponderosa Pine Tree Classification. Note: In the Bureau documentation, the 4A is scratched out and replaced with a 3A; in the Portland Station documentation it is 4A. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology and Portland Station Collections; La Grande, Oregon. Image: PS-238 and BUR-8749 To learn more about this...
Topics: susceptibility, divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry,...
In the Portland Station Collection's documentation, this image is classified as Class 4B or Class 3B. It's also documented this way in the Bureau of Entomology Collection's documentation, but then those are crossed out and replaced with a Class 3C Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology and Portland Station...
Topics: divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry, bur8736, treeselection,...
Tree Selection. Class 3B. Keen Ponderosa Pine Tree Classification. Fremont National Forest, Oregon. Photo by: Ray Filloon Date: June 1939 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Ray Filloon Collection; La Grande, Oregon. Image: Filloon-380 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...
Topics: r6, fremontnationalforest, usda, stateandprivateforestry, treeselection, age, region6,...
Class 1B. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology Collection; La Grande, Oregon. Image: BUR-8703 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....
Topics: divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry, treeselection, age,...
Tree Selection. Class 2B. Keen Ponderosa Pine Tree Classification. Fremont National Forest, Oregon. Photo by: Ray Filloon Date: June 1939 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Ray Filloon Collection; La Grande, Oregon. Image: Filloon-375 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...
Topics: r6, fremontnationalforest, usda, stateandprivateforestry, treeselection, tree, region6,...
Class 4C. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology and Portland Station Collections; La Grande, Oregon. Image: PS-237 and BUR-8756 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...
Topics: susceptibility, divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry,...
Class 1A and 1D. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology Collection; La Grande, Oregon. Image: BUR-8700 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,...
Topics: divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry, treeselection, age,...
Class 2D and Class 3D. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology and Portland Station Collections; La Grande, Oregon. Image: BUR-8718 and PS-246 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...
Topics: divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry, treeselection, age,...
Class 1B and Class 2B. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology Collection; La Grande, Oregon. Image: BUR-8702 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,...
Topics: divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry, treeselection, age,...
Class 2B-C (group). Keen Ponderosa Pine Tree Classification. Camp Sherman, Oregon. Photo by: F.P. Keen Date: August 3, 1939 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology and Portland Station Collections; La Grande, Oregon. Image: PS-417 and BUR-8884 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...
Topics: susceptibility, divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry, age,...
Class 4C or 3C. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Portland Station Collection; La Grande, Oregon. Image: PS-223 and BUR-8739 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...
Topics: divisionofforestinsectinvestigations, r6, bur8739, usda, stateandprivateforestry, class4cor3c,...
Class 3C-D (group). Keen Ponderosa Pine Tree Classification. Camp Sherman, Oregon. Photo by: F.P. Keen Date: August 3, 1939 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology and Portland Station Collections; La Grande, Oregon. Image: PS-418 and BUR-8885 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...
Topics: susceptibility, divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry,...
Class 3A. Keen Ponderosa Pine Tree Classification. Camp Sherman, Oregon. Photo by: F.P. Keen Date: August 3, 1939 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Portland Station Collection; La Grande, Oregon. Image: PS-414 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...
Topics: divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry, treeselection, tree, keen,...
Class 4B. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology and Portland Station Collections; La Grande, Oregon. Image: PS-220 and BUR-8752 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...
Topics: susceptibility, divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry,...
Tree Selection. Class 3B and Class 3C. Keen Ponderosa Pine Tree Classification. Fremont National Forest, Oregon. Photo by: Ray Filloon Date: June 1939 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Ray Filloon Collection; La Grande, Oregon. Image: Filloon-383 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...
Topics: r6, fremontnationalforest, usda, stateandprivateforestry, treeselection, tree, region6,...
Class 3A. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology and Portland Station Collections; La Grande, Oregon. Image: PS-245 and BUR-8733 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...
Topics: divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry, treeselection, age,...
Class 3C and Class 2C. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology Collection; La Grande, Oregon. Image: BUR-8716 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,...
Topics: divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry, treeselection, tree,...
Class 3C (group). Keen Ponderosa Pine Tree Classification. Camp Sherman, Oregon. Photo by: F.P. Keen Date: August 3, 1939 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Portland Station Collection; La Grande, Oregon. Image: PS-416 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...
Topics: divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry, treeselection, tree, keen,...
Class 3C. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology and Portland Station Collections; La Grande, Oregon. Image: PS-240 and BUR-8748 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...
Topics: susceptibility, divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry,...
Class 4A. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology and Portland Station Collections; La Grande, Oregon. Image: PS-230 and BUR-8751 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...
Topics: susceptibility, divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry,...
Ponderosa pine, Risk 4 (California Pine Risk-Rating System) Keen 3A (Keen Ponderosa Pine Tree Classification), Dunning 3. Blacks Mountain, California. Photo by: Bongberg Date: October 7, 1942 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology Collection; La Grande, Oregon. Image: BUR-11677B To learn more about this photo collection see: Wickman, B.E., Torgersen, T.R. and Furniss, M.M. 2002. Photographic...
Topics: susceptibility, keen3a, usda, bureauofentomologyandplantquarantine, tree, pinusponderosa, bongberg,...
Class 3B. Keen Ponderosa Pine Tree Classification. Camp Sherman, Oregon. Photo by: F.P. Keen Date: August 3, 1939 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Portland Station Collection; La Grande, Oregon. Image: PS-412 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...
Topics: divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry, treeselection, tree, keen,...
Class 4B. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology and Portland Station Collections; La Grande, Oregon. Image: PS-227 and BUR-8755 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...
Topics: susceptibility, divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry,...
Class 4C. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology and Portland Station Collections; La Grande, Oregon. Image: PS-225 and BUR-8757 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...
Topics: susceptibility, divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry,...
Class 4B and 2A. Keen Ponderosa Pine Tree Classification. Camp Sherman, Oregon. Photo by: F.P. Keen Date: August 3, 1939 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology, Portland Station Collection; La Grande, Oregon. Image: PS-410 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...
Topics: divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry, treeselection, tree, keen,...
Class 2B. Keen Ponderosa Pine Tree Classification. Camp Sherman, Oregon. Photo by: F.P. Keen Date: August 3, 1939 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology and Portland Station Collections; La Grande, Oregon. Image: PS-406 and BUR-8877 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...
Topics: susceptibility, divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry,...
Class 4A. Keen Ponderosa Pine Tree Classification. Camp Sherman, Oregon. Photo by: F.P. Keen Date: August 3, 1939 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology and Portland Station Collections; La Grande, Oregon. Image: PS-413 and BUR-8882 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...
Topics: susceptibility, divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry,...
Class 3C or Class 4C. Tree Selection. Keen Ponderosa Pine Tree Classification. Photo by: F.P. Keen Date: September 1934 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology and Portland Station Collections; La Grande, Oregon. Image: PS-233 and BUR-8747 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...
Topics: susceptibility, divisionofforestinsectinvestigations, r6, usda, stateandprivateforestry,...
