Chesapeake Bay Foundation

Energy Resource Center

Greenworks

iConserve Pennsylvania: a neat site about native plants and habitat

Land Trust Alliance

National Wildlife Federation for advice on backyard wildlife

Pennsylvania Department of Conservation and Natural Resources

Pennsylvanian Department of Environmental Protection

Pennsylvania's Invasive Plants

Pennsylvania Native Plant Society

Pennsylvania Organization for Watersheds and Rivers

Penn State Cooperative Extension, information on wildlife habitat

Susquehanna River Basin Commission

Union County Conservation District

Water Resources Education Network

Buffalo Creek Watershed Alliance