America's National Wildlife Refuge
American Society of Mammalogists
Birds of North America
Bureau of Land Management
Butterflies of North America
Clark County
Conservation District of Southern Nevada
Cornell Lab of Ornithology
Desert USA 2001
Las Vegas Wash Coordination Committee
National Audubon Society
National Park Service
Nature & Wildlife Field Guides
Nevada Department of Wildlife
Nevada Heritage Program
Northern Prairie USGS
Red Rock Audubon Society
Red Rock Canyon
The Nature Conservancy
U.S. Fish & Wildlife Service
U.S. Forest Service
VIREO