Caption: Lodgepole Pine Killed by Mountain Pine Beetle - Tenaya Basin, Yosemite National Park These trees first weakened by a needle miner, were later killed by the barkbeetle. Photo by: J.M. Miller Date: August 6, 1924 Photo and caption from page 13 of a hand-colored photo album called 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...
Topics: divisionofforestinsectinvestigations, r6, usda, artist, stateandprivateforestry, handcolored,...