USDA Forest Service:
1933. James A. Beal with climbing spurs and rope, removing bark from Dendroctonus brevicomis (western pine beetle) infested tree for determination of emergence. Sisters, Oregon.
USDA Forest Service:
1937. Twig blight eradication. Civilian Conservation Corps (CCC). Prescott National Forest, Arizona.
USDA Forest Service:
1937. Twig blight eradication. Civilian Conservation Corps (CCC/ERA). Prescott National Forest, Arizona.
USDA Forest Service:
1938. Spar tree about to be topped. Bonlokke operation. Tillamook Burn, Oregon.
USDA Forest Service:
1938. Spar tree being topped. Bonlokke operation. Tillamook Burn, Oregon.
USDA Forest Service:
1938. Rigging the spar tree. Meehan operation. Tillamook Burn, Oregon.
USDA Forest Service:
1939. Rigging the spar tree. Smith operation. Tillamook Burn, Oregon.
USDA Forest Service:
1939. Rigging a spar tree. Smith operation. Tillamook Burn, Oregon.
USDA Forest Service:
1939. Rigging the spar tree. Smith operation. Tillamook Burn, Oregon.
USDA Forest Service:
1945. Buckhorn putting up spray plot marker. Hemlock looper control project. Clatsop County, Oregon.
USDA Forest Service:
1945. Walter J. Buckhorn climbing tree to put up spray plot marker. Hemlock looper control project. Clatsop County, Oregon.
USDA Forest Service:
1955. Aluminum ladder used to take whole branch samples to be examined for number of spruce budworm. Baker, Oregon.
USDA Forest Service:
1957. Two large pole-sized western larch with heavy dwarf mistletoe. Notice large swellings on the boles. Gilbert Starks in tree examining the canker. Kootenai River above Libby, Montana.
USDA Forest Service:
1959. Truck-mounted boom used to examine cones on Douglas-fir tree prior to spraying. Shelton Ranger District, Olympic National Forest, Washington.
USDA Forest Service:
1959. Truck-mounted boom used to examine cones on Douglas-fir tree prior to spraying. Shelton Ranger District, Olympic National Forest, Washington.
USDA Forest Service:
1959. Truck-mounted boom used to examine cones on Douglas-fir trees prior to spraying. Shelton Ranger District, Olympic National Forest, Washington.
USDA Forest Service:
1959. Spraying cone moths and gall midges. Satsop Guard Station, Olympic National Forest, Washington.
USDA Forest Service:
1962. Roger Drayna removes the phloem from a white pine for a bioassay to determine if antibiotic treatment is present. Merrill, Wisconsin.
USDA Forest Service:
1962. Ted Degerstrom making full-sib crosses in Champion Mine western white pine (WWP) major gene resistance (MGR) tree. Dorena Genetic Resource Center, Cottage Grove, Oregon.
USDA Forest Service:
c.1963. Backpack spray application from elevated truck platform.
USDA Forest Service:
1963. 33 year old Sitka spruce climbed to determine incidence of weeviling. Ken H. Wright in photo. Cameras are Bronica 2-1/4 x 2 1/4 on left and Exacta 35 mm on right. Clatsop County, Oregon.
USDA Forest Service:
1963. Epinotis hopkinsana damage to Sitka spruce terminal. Bud was killed after growing about 2.5 inches; laterals are competing for dominance. This damage is often mistaken for that of Pissodes sitchensis. Ken H. Wright in tree. Cannon Beach, Oregon.
USDA Forest Service:
1964. Using a backpack mist blower from a truck mounted ladder to spray trees for cone and seed insect control. Harlan, Oregon.
USDA Forest Service:
1964. Using a backpack mist blower from a truck mounted ladder to spray trees for cone and seed insect control. Harlan, Oregon.
USDA Forest Service:
1965. Picking western white pine cones with a ladder. Horse Creek, Wasllowa-Whitman National Forest, Oregon.
USDA Forest Service:
1965. Picking western white pine cones with a ladder. Horse Creek, Wasllowa-Whitman National Forest, Oregon.
USDA Forest Service:
1965. Picking western white pine cones with a ladder. Horse Creek, Wasllowa-Whitman National Forest, Oregon.
USDA Forest Service:
1966. Twenty-six foot ladder truck used for sampling Douglas-fir tussock moth population. Dick Mason on ladder. Canal Creek Area. Modoc National Forest, California.
USDA Forest Service:
1966. Twenty-six foot ladder truck used for sampling Douglas-fir tussock moth population. Corral Creek area. Modoc National Forest, California.
USDA Forest Service:
1966. Dick Mason sampling Douglas fir tussock moth populations on Abies concolor. "Hammock" is placed under and then wrapped around branch to keep larvae from falling. Branch is then cut off and examined. Corral Creek Area. Modoc National Forest, CA.
