Nature by Ralph Waldo Emerson
Walking by Henry David Thoreau
Man and Nature by George Perkins Marsh
The Everglades: River of Grass by Marjorie Stoneman Douglas
The Yosemite by John Muir
Our National Parks by John Muir
Steep Trails by John Muir
Under the Sea-Wind, The Sea Around Us, Edge of the Sea by Rachel Carson
A Sand County Almanac by Aldo Leopold
The Land Ethic by Aldo Leopold
Desert Solitaire: A Season in the Wilderness by Edward Abbey
The Monkey Wrench Gang by Edward Abbey
Cadillac Desert: The American West and Its Disappearing Water by Marc Reisner
Houston Arboretum and Nature Center
San Bernard National Wildlife Refuge
Big Boggy National Wildlife Refuge
Brazoria National Wildlife Refuge
Anahuac National Wildlife Refuge
Moody National Wildlife Refuge
Trinity River National Wildlife Refuge
Attwater Prairie Chicken National Wildlife Refuge
McFaddin National Wildlife Refuge