Access Fund

America The Beautiful® Fund

American Alpine Club

American Discovery Trail Society

American Fisheries Society

American Hiking Society

American Whitewater

Antarctica and Southern Ocean Coalition

Appalachian Trail Conservancy

Archaeological Conservancy

Boone and Crockett Club

Center for Biological Diversity

Chesapeake Bay Foundation, Inc.

Civil War Trust

Clean Water for Healthy Americans

Climate Reality Project

Conservation and Protection of Public Lands

Coral Reef Alliance

Delta Waterfowl Foundation

Equine Land Conservation Resource

Filipino American Rural Mission

Forest Conservation (Pinchot Institute for Conservation)

Gettysburg Foundation

Green Empowerment

Greenpeace Fund

Hawk Mountain Sanctuary Association

Jewish National Fund (Keren Kayemeth LeIsrael), Inc.

National Marine Sanctuary Foundation

National Park Foundation

National Park Trust

National Wild Turkey Federation, Inc.

Nature and Culture International

Nature Science Partnership to Save the Planet

NatureIsrael

Negative Population Growth

NumbersUSA Education and Research Foundation

Ocean Foundation

Pacific Crest Trail Association

Pheasants Forever

Population Institute

Public Employees for Environmental Responsibility

Rainforest Partnership

Rainforest Trust

RARE

Rocky Mountain Elk Foundation

Ruffed Grouse Society

Save America's Forests Fund

Soil and Water Conservation Society

Solar Electric Light Fund

Take Me Fishing

Theodore Roosevelt Conservation Partnership, Inc.

Tread Lightly!, Inc.

Trees, Water and People

Trout Unlimited

Wildlife Conservation Fund of America

Wildlife Forever

Wildlife Society, Inc.

Yellowstone Coalition: Protecting the Lands, Waters, and Wildlife

Yosemite Conservancy