Photos from the WFIWC Archives:
Equipment and Methodology

Mountain pine beetle control, Crater Lake N.P., Oregon, 1929. Tractor pulling sleds loaded with control camp equipment and work crew. The outbreak in lodgepole pine extended from 1925-1934. Infested trees had to be felled and burned in early spring before beetles had emerged from trees and flown. At that time, deep snow was still present. Photo no. 9845 by J.E. Patterson, WFIWC archives. (Wickman et al. 2002, Fig. 7 A; Wickman 1990).

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