<p>Research Entomologist Jim Bean (right) checking olfactory response of adult spruce budworms to various hosts using olfactometer. Kawishiwi Laboratory, Kawishiwi Ranger District, Superior National Forest, Minnesota. 
</p><p>Photo by: P. Freeman Heim
Date: August 1957
</p><p>Image credit: National Archives and Records Administration
RG# 95-GP. Records of the Forest Service. General Subject Files.
Forest Service Negative Number: 485413
National Archives Identifier: 2130680
</p>
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<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/151887236@N05/44363474120/">1957. Research Entomologist Jim Bean (right) checking olfactory response of adult spruce budworms to various hosts using olfactometer. Kawishiwi Laboratory, Kawishiwi Ranger District, Superior National Forest, Minnesota.</a>