- Sierra Club
- The Sierra Club's members are 700,000 of your friends and neighbors. Inspired by nature, we work together to protect our communities and the planet. The Club is America's oldest, largest and most influential grassroots environmental organization.
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- Mother Lode Chapter of the Sierra Club
- Local Chapter of the Sierra Club serving Northern California Central Valley and Sierra Nevada.
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- National Geographic Online
- The largest nonprofit scientific and educational institution in the world
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- World Wildlife Fund
- World Wildlife Fund leads worldwide efforts to protect the world's threatened wildlife and the habitats they need to survive.
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- National Wildlife Federation
- NWF focuses its efforts on five core issue areas (Endangered Habitat, Water Quality, Land Stewardship, Wetlands, and Sustainable Communities), and pursues a range of educational projects, and activist, advocacy, and litigation initiatives, within these core areas.
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- Red Bud Chapter of the CA Native Plants Society
- The California Native Plant Society is a nonprofit organization dedicated to the preservation of California's native flora. The Redbud Chapter serves Nevada and Placer Counties.
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- Defenders of Wildlife
- Defenders of Wildlife is dedicated to the protection of all native wild animals and plants in their natural communities.
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- Predator Conservation Alliance
- Working to conserve and restore ecosystem integrity by protecting predators and their habitats
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- The Mountain Lion Foundation
- a nonprofit conservation and education organization founded in 1986, dedicated to protecting the mountain lion, its wild habitat and the wildlife that shares its habitat
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- Planning & Conservation League
- The Planning and Conservation League (PCL) is a 30-year-old, statewide, nonprofit alliance of citizens and conservation organizations united to protect and restore the quality of California's environment through legislative and administrative action.
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- Natural Resources Defense Council
- Environmental Organization devoted, like the rest, to the betterment of the environment.
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- Brousseau California Flora Pictures
- Brother Alfred Brousseau F.S.C. (1908-1988) made a collection of 35 mm color slides of Native Wildflowers of California which consists of over 10,000 slides of over 2,000 species. The object of this project is to make this material available to all. The project is a not-for-profit effort and donations are welcome to help defray the production costs.
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--- Protect American River Canyons ---
