The following Insect Identification resources may be of use to you during and after the Wenatchee Naturalist Course.
Insects of the Pacific Northwest (Timber Press Field Guides) by Peter Haggard and Judy Haggard(Mar 20, 2006)
Insects: Their Natural History and Diversity: With a Photographic Guide to Insects of Eastern North America [Hardcover] by Stephen A. Marshall ($$$) A large-format comprehensive volume containing excellent color photos, natural history narratives, and a flow-chart illustrated identification key.
National Audubon Society Field Guide to North American Insects and Spiders (National Audubon Society Field Guides by NATIONAL AUDUBON SOCIETY (Nov 12, 1980)
Butterfly Field Guides
The Butterflies of Cascadia: A Field Guide to All the Species of Washington, Oregon, and Surrounding Territoriesby Robert Michael Pyle, Idie Ulsh and David Nunnallee(May 2002)
Butterflies of North America (Kaufman Field Guides) by Jim P. Brock and Kenn Kaufman(Sep 1, 2006)
Bee Conservation books
Attracting Native Pollinators: The Xerces Society Guide, Protecting North America’s Bees and Butterfliesby The Xerces Society(Feb 26, 2011)