USDA Forest Service:
1924. Spraying lead arsenate on sawfly and needletier infested lodgepole pines. West Yellowstone, Montana.
USDA Forest Service:
1929. Man applying kerosene with pressure pump (Meyer's pump). Milk Creek Insect Control Project. Targhee National Forest, Idaho.
USDA Forest Service:
1929. Meyers pressure pump for applying kerosene. Insect control project. Targhee National Forest, Idaho.
USDA Forest Service:
1931. "Pushing" the flames higher up on clear bole tree. 3 and 4, 3' extensions on pumps are used. Wyoming National Forest, Wyoming.
USDA Forest Service:
1930. Insect burning crew. 4 burners each carry pressure pumps; spot and and burn "bugged" trees. Targhee NF, ID.
USDA Forest Service:
1930. Spraying insect infested trees with oil. Targhee National Forest, Idaho.
USDA Forest Service:
1930. Tree in flames. Burning standing tree is one method of insect control. Targhee National Forest, Idaho.
USDA Forest Service:
1931. Burning a mountain pine beetle infested tree. Yellowstone National Park.
USDA Forest Service:
1933. Civilian Conservation Corps (CCC). Spraying Ribes (wild currant) with atlascide for blister rust control. Boy is from Camp F42. St. Joe National Forest, Idaho.
USDA Forest Service:
1933. Civilian Conservation Corps (CCC). Spraying Ribes (wild currant) with atlascide for blister rust control. Enrollee is from Camp F-42. St. Joe National Forest, Idaho.
USDA Forest Service:
1934. Spraying street trees for insect control. New York.
USDA Forest Service:
1937. Spraying machine for insect control mounted on a truck. Chippewa National Forest, Minnesota.
USDA Forest Service:
1937. Spraying for insect control. Chippewa National Forest, Minnesota.
USDA Forest Service:
1940. Mobile power sprayer in operation in windbreaks at Chittenden Nursery. Huron-Manistee National Forest, Michigan.
USDA Forest Service:
1940. Spraying windbreaks with arsenate of lead to control Junebug beetles. Huron-Manistee National Forest, Michigan.
USDA Forest Service:
1944. Spraying Douglas-fir and ponderosa pine for spruce budworm with DDT. Roosevelt National Forest, Colorado.
USDA Forest Service:
1946. Member of spray crew spraying trunk of tree with chemical to kill the beetles. Ashley National Forest, Utah.
USDA Forest Service:
1948. Stanisol weed spray unit built to extend over an entire bed of seedlings. Hoosier National Forest, Indiana.
USDA Forest Service:
1948. Ponderosa pine slash resulting from logging. Unlopped tops heavily attacked by California five-spined engraver (Ips confusus, Lec.). Shasta National Forest, California.
USDA Forest Service:
1948. Spraying ponderosa pine slash with DDT to prevent further attack and breeding by California five-spined engraver (Ips confusus, Lec.). Shasta National Forest, California.
USDA Forest Service:
1959. Basal stem application of antibiotics for white pine blister rust control. Idaho.
USDA Forest Service:
1960. Hand spraying equipment adapted for blister rust control; Smith Model 25 G.F. two gallon, and Parco Model 1803S, 4.5 gallon, both with modified hoses, clamps, shut-off valves, wands, and nozzle assemblies. Franklin County, New York.
USDA Forest Service:
1960. Standard production model 25 G.F. two gallon Smith sprayer complete with tank, hose, wand, control valve, and nozzle assembly. Unit used in Region 7, Area II Blister Rust Control project for the eradication of Ribes. Greenfield, Massachusetts.
USDA Forest Service:
1960. Standard production model 25 G.F. two gallon Smith sprayer complete with tank, hose, wand, control valve, and nozzle assembly. Unit used in Region 7, Area II Blister Rust Control project for the eradication of Ribes. Greenfield, Massachusetts.
USDA Forest Service:
1960. A crewman applying the antibiotic fungicide cycloheximide to the trunk of a young western white pine in an attempt to arrest damage caused by white pine blister rust. Coeur D'Alene National Forest, Idaho.
USDA Forest Service:
1960. Using a KIEKENS Whirlwind Mist Blower for spraying Ribes (glandulosum) in the Tupper Lake area just south of Paul Smith's. Note the heavy concentration of skunk currants on the stump of the overturned tree. Franklin County, New York.
USDA Forest Service:
1960. Spraying white pine with Actidione to kill blister rust infection and immunize tree from disease. Superior National Forest, Minnesota.
USDA Forest Service:
1960. Spraying white pine with Actidione to kill blister rust infection and immunize tree from disease. Superior National Forest, Minnesota.
USDA Forest Service:
1960. Treating blister rust with Actidione. Control spray test at Oregon State University, Corvallis, Oregon.
USDA Forest Service:
1960. Backpack sprayer used to treat blister rust with Actidione. Control spray test at Oregon State University, Corvallis, Oregon.
