USDA Forest Service:
1911. W.B. Turner (left) special agent in charge of cooperation with private owners; and H.E. Burke, Agent and Expert in charge of the Northeastern Oregon Bark Beetle Control Project. USDA Bureau of Entomology Forest Insect Station Number 6. Baker, Oregon
USDA Forest Service:
1912 Insect control methods cartoon.
USDA Forest Service:
1914. The type of cigar box cage used for rearing cone and seed insect cage. Jeffrey pine. Cones collected August 19, 1913.
USDA Forest Service:
1914. USDA Bureau of Entomology, Forest Insect Investigations. Field Station quarters and personnel. Ashland, Oregon.
USDA Forest Service:
c.1916. Large sugar pine tree (Pinus lambertiana) attacked and killed by mountain pine beetle (Dendroctonus monticolae). "370 years old. Killed by Beetles in one year." Treated by Park Ranger Adair. Yosemite National Park, California.
USDA Forest Service:
1917. Ashland Field Station. US Department of Agriculture, Bureau of Entomology, Forest Insect Investigations. 111 3rd Street, Ashland, Oregon.
USDA Forest Service:
1920. John Patterson on the porch of the Ashland Field Station. US Department of Agriculture, Bureau of Entomology, Forest Insect Investigations. 111 3rd Street, Ashland, Oregon.
USDA Forest Service:
1920. Illustration for paper "Life History of the Lodgepole Pine Needle Miner." Recurvaria milleri.
USDA Forest Service:
c.1922. Baldwin Hotel. Klamath Falls, Oregon.
USDA Forest Service:
1922. County Court House. American Legion Headquarters. Klamath Post Number Eight. Main office of Southern Oregon Northern California project occupied one quarter of the first floor of this building. 316 Main Street, Klamath Falls, Oregon.
USDA Forest Service:
1923. Pine Beetle Control Project parade float sponsored by: USDA Forest Service, U.S. Indian Service, USDA Bureau of Entomology, Oregon State Board of Forestry, and the Klamath Forest Protective Association. SONC control project. Klamath Falls, OR.
USDA Forest Service:
1923. Pine Beetle Control Project parade float sponsored by: USDA Forest Service, U.S. Indian Service, USDA Bureau of Entomology, Oregon State Board of Forestry, and the Klamath Forest Protective Association. Klamath Falls, Oregon.
USDA Forest Service:
1934. The Bureau of Entomology and the Bureau of Plant Quarantine are consolidated with the disease control and eradication functions of the Bureau of Plant Industry to create the Bureau of Entomology and Plant Quarantine (BEPQ).
USDA Forest Service:
1934. Yellow stain in outer sapwood of heavily burned Douglas-fir, caused by leaching of elements in the dead cambium. Tree medication studies. Jewell, Oregon.
USDA Forest Service:
1934. Discoloration caused by absorption of mercuric chloride solution in green Douglas-fir, 12 inches above saw cut. Tree medication studies. Jewell, Oregon.
USDA Forest Service:
1934. Section of burned Douglas-fir showing Eosine (Eosin), HgCl2 (mercuric chloride), and Cambium stains. Tree medication studies. Jewell, Oregon.
USDA Forest Service:
1934. Section of lightly-burned Douglas-fir showing irregular absorption of Eosine (Eosin) dye and HgCl2 (mercuric chloride) solution. Tree medication studies. Jewell, Oregon.
USDA Forest Service:
1935. Callidium californicum Csy. work in Juniperus occidentalis. Hopk.U.S. 18199-a. Collected by F.P. Keen in Terrebonne, Oregon.
USDA Forest Service:
1935. Cover. BarkBeetle Enemies of California Forests. Prepared by the USDA Bureau of Entomology and Plant Quarantine in cooperation with the State Emergency Relief Administration - Project 3F-2-302 and Emergency Educational Program. Berkeley, CA.
USDA Forest Service:
1935. Title page. BarkBeetle Enemies of California Forests. Prepared by the USDA Bureau of Entomology and Plant Quarantine in cooperation with the State Emergency Relief Administration - Project 3F-2-302 and Emergency Educational Program. Berkeley, CA.
USDA Forest Service:
1935. Page 2. BarkBeetle Enemies of California Forests. Prepared by the USDA Bureau of Entomology and Plant Quarantine in cooperation with the State Emergency Relief Administration - Project 3F-2-302 and the Emergency Educational Program. Berkeley, CA.
USDA Forest Service:
1935. Page 5. BarkBeetle Enemies of California Forests. Prepared by the USDA Bureau of Entomology and Plant Quarantine in cooperation with the State Emergency Relief Administration - Project 3F-2-302 and the Emergency Educational Program. Berkeley, CA.
USDA Forest Service:
1935. Page 17. BarkBeetle Enemies of California Forests. Prepared by the USDA Bureau of Entomology and Plant Quarantine in cooperation with the State Emergency Relief Administration - Project 3F-2-302 and the Emergency Educational Program. Berkeley, CA.
USDA Forest Service:
1939. Location of minimum recording thermometers on ponderosa pine trees in the 1938-1939 temperature study.
USDA Forest Service:
1939. Paramount Theatre showing Irving Berlin's Second Fiddle and The Lady and The Mob. Portland, Oregon.
USDA Forest Service:
1939. A Brief Review of Forest Insect Problems in the Pacific Northwest. Presented to the Joint Congressional Committee on Forestry. Publication cover.
USDA Forest Service:
1939. A Brief Review of Forest Insect Problems in the Pacific Northwest. Chart 1: Total annual loss from Pine Beetles in Oregon and Washington 1931 to 1938.
USDA Forest Service:
1939. A Brief Review of Forest Insect Problems in the Pacific Northwest. Chart 3. Average Annual Growth and Depletion of Ponderosa Pine Eastside Oregon and Washington 1931-1937.
USDA Forest Service:
1939. A Brief Review of Forest Insect Problems in the Pacific Northwest. Chart 2. Average Annual Value of Ponderosa Pine Killed By Beetles in Oregon and Washington 1931-1937.
USDA Forest Service:
1939. A Brief Review of Forest Insect Problems in the Pacific Northwest. Chart 6. Average Annual Value of Ponderosa Pine Killed by Beetles in Oregon and Washington and Amount Spent for Control and Research 1931-1938.
