"Wildflowers of the White Mountains" by John Hession and Valerie Michaud
"Wildflowers of Vermont" by Kate Carter
"AMC Field Guide to Mountain Flowers of New England" by Appalachain Mountain Club
"New England Wildflowers" by Frank Kaczmarek
"Spring Wildflowers of New England" by Marilyn Dwelley
"Summer and Fall Wildflowers of New England" by Marilyn Dwelley
"The Heritage of Our Maine Wildflowers" by Judith B. Johnson
"Newcomb's Wildflower Guide" by Lawrence Newcomb
"The Audubon Society Field Guide to North American Wildflowers, Eastern Region" by William A. Nieting et al
"Wildflowers in the Field and Forest" by Steven Clemants and Carol Gracie
"Weeds of the Northeast" by Richard Uva, Joseph Neal and Joseph DiTomaso
Peterson Field Guide: "Wildflowers of Northeastern and North-central North America" by Roger Tory Peterson and Margaret McKenny
"Botany Everywhere" by Martin Michener (a revolutionary electronic-format guidebook for New England plants)