Bibliography
- Mariposa Road: The First Butterfly Big Year. 2010. Houghton Mifflin.
- Sky Time in Gray's River: Living for Keeps in a Forgotten Place." 2007. Houghton Mifflin.
- The Butterflies of Cascadia: A Field Guide to All the Species of Washington, Oregon, and Surrounding Territories. 2002. Seattle Audubon Society.
- Nabokov's Butterflies. Edited and annotated by Pyle and Brian Boyd, with new translations from the Russian by Dmitri Nabokov. 2000. Beacon Press.
- Walking the High Ridge: Life As Field Trip. 2000. Milkweed Editions.
- Chasing Monarchs: A Migration with the Butterflies of Passage. 1999. Houghton Mifflin.
- The Thunder Tree: Lessons from An Urban Wildland. 1998. Lyons Press.
- Where Bigfoot Walks: Crossing the Dark Divide. 1995. Houghton Mifflin.
- Insects: A Peterson Field Guide Coloring Book. 1993. Houghton Mifflin.
- Handbook for Butterfly Watchers. 1992. Houghton Mifflin.
- Wintergreen: Listening to the Land's Heart. 1987. Houghton Mifflin.
- Butterflies: A Peterson Field Guide Coloring Book. (With Sarah Anne Hughes and Roger Tory Peterson). 1983. Houghton Mifflin.
- The Audubon Society Field Guide to North American Butterflies. 1981. Knopf.
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