| American Hiking Society | MD |
| Anacostia Watershed Society | MD |
| Episcopal Diocese of Maryland's Committee on the Environment | MD |
| Association of Zoos and Aquariums | MD |
| Born Free | MD |
| Audubon Society of Central Maryland | MD |
| Maryland PIRG | MD |
| Maryland Native Plant Society | MD |
| National Association of People with AIDS | MD |
| Public Employees for Environmental Responsibility | MD |
| Society and Animals Forum | MD |
| The Wildlife Society | MD |
| Wildlife Society | MD |
| Maryland Alliance for Greenway Improvement and Conservation | MD |
| Maryland United for Peace and Justice | MD |
| Southern Maryland Audubon Society | MD |
| Rock Creek Conservancy, Inc. | MD |
| OneNature | MD |
| Chewonki Foundation | ME |
| Conservation Law Foundation | ME |
| Maine Audubon Society | ME |
| Restore the North Woods | ME |
| VOICE for Animals | ME |
| Wildlife Alliance of Maine | ME |
| Friends of Merrymeeting Bay | ME |
| Animal and Society Institute | MI |
| Ecology Center of Ann Arbor, Inc. | MI |
| East Michigan Environmental Action Council | MI |
| Michigan Environmental Council | MI |
| Michigan Humane Society | MI |
| Environmental Law Society, University of Michigan | MI |
| West Michigan Environmental Action Council | MI |
| Lone Tree Council | MI |
| Howling for Wolves | MN |
| Minnesota Native Plant Society | MN |
| National Wolfwatcher Coalition | MN |
| Minnesota River Valley Audubon Chapter | MN |
| Save Our Sky Blue Waters | MN |
| Missouri Botanical Garden | MO |
| Sierra Club, Missouri Chapter | MO |
| Animal Wonders Kansas City | MO |
| Upper Missouri Breaks Audubon Society | MT |
| Bear Trust International | MT |
| Center for Wildlife Information | MT |
| Fly Fishers International | MT |
| Greater Yellowstone Coalition | MT |
| Montana Audubon | MT |
| People and Carnivores | MT |
| Turner Endangered Species Fund | MT |
| Montana Wilderness Association | MT |
| Buffalo Field Campaign | MT |
| Alliance for the Wild Rockies | MT |
| Last Chance Audubon Society | MT |
| Large Carnivore Fund | MT |
| Dogwood Alliance | NC |
| Presbyterians for Earth Care | NC |
| Wild South | NC |
| Western North Carolina Alliance | NC |
| Conservation Alliance of the Great Plains | NE |
| Western Nebraska Resources Council | NE |
| Gotham Bat Conservancy | New York |
| Harris Center for Conservation Education | NH |
| Audubon Society of New Hampshire | NH |
| The Caterpillar Lab | NH |
| Voices of Wildlife in NH | NH |
| Environmental Education Fund | NJ |
| Fyke Nature Association | NJ |
| New Jersey Audubon Society | NJ |
| Washington Crossing Audubon Society | NJ |
| New Jersey Environmental Lobby | NJ |
| SandyHook SeaLife Foundation | NJ |
| African People & Wildlife | NJ |
| Wild Earth Guardians | NM |
| Wildlife for All | NM |
| Friends of Nevada Wilderness | NV |
| Nevada Wildlife Federation | NV |
| Tortoise Group | NV |
| Walker Lake Working Group | NV |
| Canada Goose Project | NY |
| Cornell Greens | NY |
| Friends of the Bay | NY |
| Garden Club of America | NY |
| Great Lakes United | NY |
| Trevor Zoo | NY |
| NY4WHALES | NY |
| New York Turtle and Tortoise Society | NY |
| Wolf Conservation Center | NY |
| Panthera | NY |
| Great South Bay Audubon Society | NY |
| Quality Parks | NY |
| Riverhead Foundation | NY |
| Coalition on the Environment and Jewish Life | NY |
| The Union for Reform Judaism | NY |
| The Activism Center at Wetlands Preserve | NY |
| Long Island Pine Barrens Society | NY |
| New York State Wildlife Rehabilitation Council | NY |
| South Shore Audubon Society | NY |
| NYC Plover Project | NY |
| Species Unite | NY |
| Friends of Buttonhook Forest Inc | NY |
