Apocalyptic Planet: Field Guide to the Everending Earth by Craig Childs, winner of the 2013 Sigurd Olson Nature Writing Award.
The Singing Wilderness by Sigurd Olson
The Evolution of a Natural Miracle by Thor Hanson
The Forest Unseen by David Haskell
Siesta Lane by Amy Minato
Desert Solitaire by Edward Abbey
Swampwalker's Journal by David Carroll
My First Summer in the Sierra by John Muir (The text is available online at the magnificent tribute site compiled by the Sierra Club, which also includes photos, illustrations
A Sand County Almanac by Aldo Leopold
Refuge by Terry Tempest Williams
Land of Little Rain by Mary Hunter Austin
Walden by Henry David Thoreau
Woman and Nature by Susan Griffin
Arctic Dreams Barry Lopez
Rural Hours by Susan Fenimore Cooper
Although the group is not meeting at present, you are welcome to post your comments about books on the Nature Writers blogsite: http://potomacvalleynaturewritinggroup.blogspot.com/.