File:1959. Norman E. Johnson sampling large Douglas-fir old-growth windfall for Douglas-fir beetle broods. McDonald Tree Farm. Lewis County, Washington. (33429380481).jpg
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![File:1959. Norman E. Johnson sampling large Douglas-fir old-growth windfall for Douglas-fir beetle broods. McDonald Tree Farm. Lewis County, Washington. (33429380481).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/4/45/1959._Norman_E._Johnson_sampling_large_Douglas-fir_old-growth_windfall_for_Douglas-fir_beetle_broods._McDonald_Tree_Farm._Lewis_County%2C_Washington._%2833429380481%29.jpg/745px-thumbnail.jpg?20180503235545)
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