Allegheny County
| Pittsburgh | Beechwood Farms Nature Reserve and Todd Sanctuary |
| Pittsburgh | Botanical Society of Western Pennsylvania |
| Pittsburgh | Conservation Consultants Inc. Center |
| Pittsburgh | Clean Water Action |
| Pittsburgh | The E House Company |
| Pittsburgh | Group Against Smog and Pollution |
| Pittsburgh | Frick Environmental Center |
| Pittsburgh | National Aviary |
| Pittsburgh | Nature Observer News |
| Pittsburgh | PA Resources Council |
| Pittsburgh | Phipps Conservatory and Botanical Gardens |
| Pittsburgh | Pittsburgh Parks Conservancy |
| Pittsburgh | RiverQuest |
| Pittsburgh | The Pittsburgh Zoo |
| Pittsburgh | Rachel Carson Institute |
| Pittsburgh | Regional Environmental Education Center |
| Pittsburgh | Steel Recycling Institute |
| Pittsburgh | Three Rivers Storm Drain Stenciling Team |
| Pittsburgh | The Animal Rescue League |
| Springdale | Rachel Carson Homestead |
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