Mushrooms of the Pacific Northwest, Revised Edition
Steve Trudell
Mushrooms of the Northeastern United States and Eastern Canada
Timothy J. Baroni
Wildflowers of New England
Ted Elliman & Native Plant Trust
Birds of the Pacific Northwest
John Shewey & Tim Blount
Trees and Shrubs of the Pacific Northwest
Mark Turner & Ellen Kuhlmann
Wildflowers of the Rocky Mountain Region
Denver Botanic Gardens
Butterflies of the Pacific Northwest
Robert Michael Pyle & Caitlin C. LaBar
Wildflowers of the Atlantic Southeast
Laura Cotterman, Damon Waitt & Alan Weakley
Wildflowers of Texas
Michael Eason
Birds of Arizona and New Mexico
Melissa Fratello & Steven Prager