U.S. Fish and Wildlife Service
U.S. National Park Service
U.S. Geological Survey - Biological Resources Division
U.S. Forest Service, Northeast Forest Research Station
Allegheny National Forest
PA Department of Agriculture
PA Department of Natural Resources, Bureau of Forestry
Pennsylvania Game Commission
Pennsylvania Fish and Boat Commission
Pennsylvania Natural Diversity Inventory
Wild Resources Conservation Fund
Pennsylvania Center for Environmental Education
Pennsylvania Herpetological Atlas Project at Indiana University of Pennsylvania
Academy of Natural Sciences of Philadelphia
Carnegie Museum of Natural History
Penn State Cooperative Wetlands Center
Pennsylvania Flora Project
Ornithological Information Source
The Nature Conservancy
Pennsylvania Ornithological Society
The Audubon Society
Center for BioDiversity Research - Environmental Resources Research Institute
Pennsylvania State University
The National Biological Survey
Hawk Mountain Sanctuary
Center for Native Plants: Audubon Society of Western Pennsylvania
Information on the Bog Turtle
Bowman's Hill Wildflower Preserve
Endangered Animals in Pennsylvania
Peregrine Falcon Page of the Department of Environmental Protection
Penn State Entomological Museum Holdings
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