| John Muir Project of Earth Island Institute | CA |
| Juniata Valley Audubon Society | PA |
| Juniata Valley Audubon Society | PA |
| Kalmiopsis Audubon Society | OR |
| Kentucky Heartwood | KY |
| Kettle Range Conservation Group | WA |
| Key Deer Protection Alliance | FL |
| Key West Wildlife Center | FL |
| KS Wild | OR |
| Lake Champlain Committee | VT |
| LandWatch Monterey County | CA |
| Larch Company | DC |
| Large Carnivore Fund | MT |
| Last Chance Audubon Society | MT |
| League of Conservation Voters | DC |
| League of Women Voters of the US | DC |
| Lobos of the Southwest | AZ |
| Lone Tree Council | MI |
| Long Island Pine Barrens Society | NY |
| Lutheran School of Theology at Chicago | IL |
| Madison Audobon | WI |
| Maine Audubon Society | ME |
| Marine Fish Conservation Network | DC |
| Marine Resources Council | FL |
| Maryland Alliance for Greenway Improvement and Conservation | MD |
| Maryland Native Plant Society | MD |
| Maryland PIRG | MD |
| Maryland United for Peace and Justice | MD |
| Massachusetts Audubon Society | MA |
| Massachusetts Society for the Prevention of Cruelty to Animals | MA |
| Michigan Environmental Council | MI |
| Michigan Humane Society | MI |
| Michoacan Reforestation Fund | KS |
| Minnesota Native Plant Society | MN |
| Minnesota River Valley Audubon Chapter | MN |
| Missouri Botanical Garden | MO |
| Montana Audubon | MT |
| Montana Wilderness Association | MT |
| Morris Arboretum of the University of Pennsylvania | PA |
| Mount Graham Coalition | TX |
| Movement for a People's Party | CA |
| Naropa University | CO |
| National Association of Biology Teachers (NABT) | VA |
| National Association of People with AIDS | MD |
| National Audubon Society | DC |
| National Humane Education Society | WV |
| National Recreation & Parks Assoc | VA |
| National Wildlife Refuge Association | DC |
| National Wolfwatcher Coalition | MN |
| Native Plant Conservation Campaign | CA |
| Native Plant Society of Oregon | OR |
| Native Plant Society of Oregon | OR |
| Natural Areas Association | PA |
| Natural Resources College, UW SP | WI |
| Nature Abounds | PA |
| Neshaminy Creek Watershed Association | PA |
| Nevada Wildlife Federation | NV |
| New England Wildflower Society | MA |
| New Jersey Audubon Society | NJ |
| New Jersey Environmental Lobby | NJ |
| New York State Wildlife Rehabilitation Council | NY |
| New York Turtle and Tortoise Society | NY |
| North Cascades Conservation Council | WA |
| North Central Washington Audubon Society | WA |
| North Coast Environmental Center | CA |
| Northeast Pennsylvania Audubon Society | PA |
| Northern Alaska Environmental Center | AK |
| Northern California Council, Fly Fishers International | CA |
| Northern Flint Hills Audubon Society | KS |
| Northern Jaguar Project | AZ |
| Northern Virginia Bird Alliance | VA |
| Northwest Center for Alternatives to Pesticides | OR |
| NRDC | DC |
| NY4WHALES | NY |
| NYC Plover Project | NY |
| Ocean Alliance | MA |
| Ocean Preservation Society | CA |
| Ocean State Action | RI |
| Oceana | DC |
| Ohio Valley Environmental Coalition | WV |
| One World One Ocean | CA |
| OneNature | MD |
| Orange County People for Animals | CA |
| Oregon Natural Desert Association | OR |
| Oregon Wild | OR |
| Pacific Rivers Council | OR |
| Pandas International | CO |
| Panthera | NY |
| Payne County Audubon Society | OK |
| Peace and Justice Center | VT |
| Pegasus Foundation | MA |
| Pelecanus Inc | Long Beach, CA |
| Pelican Island Audubon Society | FL |
| PennEnvironment | PA |
| Pennsylvania Audubon | PA |
| Pennsylvania Society for Ornithology | PA |
| Pennsylvania Society for Ornithology | PA |
| Pennsylvania Trout | PA |
| Pennsylvania Wildlife Federation | PA |
| People and Carnivores | MT |
