- Where Bigfoot walksRobert Michael Pyle
- The Audubon Society field guide to North American butterfliesRobert Michael Pyle
- The thunder treeRobert Michael Pyle
- The Audubon Society handbook for butterfly watchersRobert Michael Pyle
- A field guide to butterflies coloring bookRoger Tory Peterson Institute, Robert Michael Pyle
- Chasing MonarchsRobert Michael Pyle
- Sky Time in Gray's RiverRobert Michael Pyle
- WintergreenRobert Michael Pyle, David Guterson
- Walking the high ridgeRobert Michael Pyle
- WintergreenRobert Michael Pyle
- Butterflies of the Pacific NorthwestRobert Michael Pyle, Caitlin C. LaBar
- ButterfliesRobert Michael Pyle
