| Rockhill Environmental Preservation Alliance IncPerkasie | Form 990-N | No figure |
| Wallace TrustGlenmoore | Form 990-N | No figure |
| Big Spring Watershed AssociationNewville | Form 990-N | No figure |
| Mundo Madre IncPhiladelphia | Form 990-N | No figure |
| Canonsburg Lake Restoration and Imp AssnDormont | Form 990-N | No figure |
| Southern Alleghenies Conservancy IncHuntingdon | Form 990-N | No figure |
| Montour Run Watershed AssociationPittsburgh | Form 990-N | No figure |
| Chartiers Nature Conservancy IncPittsburgh | Form 990-N | No figure |
| 25th Infantry Memorial Fund IncFlourtown | Form 990-N | No figure |
| Coxton Lake Environmental Preserve ClepNewtown | Form 990-N | No figure |
| Nature Club at the Villages at Pine ValleyPhiladelphia | Form 990-N | No figure |
| Scrubgrass Creek Watershed AssociationKennerdell | Form 990-N | No figure |
| Friends of Smedley Park CorpSpringfield | Form 990-N | No figure |
| Foraging Friends IncShamokin | Form 990-N | No figure |
| Armstrong Conservancy IncKittanning | Form 990-N | No figure |
| Wysox Creek Watershed Association IncLe Raysville | Form 990-N | No figure |
| Olde & South Kensington Green SpacePhiladelphia | Form 990-N | No figure |
| South Fayette Conservation GroupMorgan | Form 990-N | No figure |
| Gallows Run Watershed Association Formerly Durham Nox Land TrustKintnersville | Form 990-N | No figure |
| Milford Garden ClubMilford | Form 990-N | No figure |
| Wild Waterways Conservancy IncHarmony | Form 990-N | No figure |
| Friends of Allegheny WildernessWarren | Form 990-N | No figure |
| Friends of Fishing CreekNew Providence | Form 990-N | No figure |
| Friends of Opossum LakeCarlisle | Form 990-N | No figure |
| Allegheny Valley ConservancyFranklin | Form 990-N | No figure |
| Antietam Watershed Association IncWaynesboro | Form 990-N | No figure |
| Garden Club Federation of PennsylvaniaMunhall | Form 990-N | No figure |
| Watershed Coalition of the Leigh ValleyNazareth | Form 990-N | No figure |
| New Freedom Heritage IncNew Freedom | Form 990-N | No figure |
| Friends of the NescopeckConyngham | Form 990-N | No figure |
| Freeport Renaissance AssociationFreeport | Form 990-N | No figure |
| Newberry Community PartnershipWilliamsport | Form 990-N | No figure |
| Etnet IncWest Chester | Form 990-N | No figure |
| Garden Club Federation of PennsylvaniaRices Landing | Form 990-N | No figure |
| Garden Club Federation of PennsylvaniaWatsontown | Form 990-N | No figure |
| Mehoopany Creek Watershed AssociationMehoopany | Form 990-N | No figure |
| Garden Club Federation of PennsylvaniaPittsburgh | Form 990-N | No figure |
| Roaring Creek Valley Conservation AssociationElysburg | Form 990-N | No figure |
| Valley Forge Watershed AssociationCollegeville | Form 990-N | No figure |
| Brokenstraw Watershed CouncilCorry | Form 990-N | No figure |
| Middle Spring Watershed Association IncShippensburg | Form 990-N | No figure |
| Earth Environmental Group IncSolebury | Form 990-N | No figure |
| Garden Club Federation of PennsylvaniaLigonier | Form 990-N | No figure |
| Clinton County CleanscapesMill Hall | Form 990-N | No figure |
| Garden Club Federation of PennsylvaniaCharleroi | Form 990-N | No figure |
| Sugar Branch Lake Watershed AssociationTroy | Form 990-N | No figure |
| Hansberry Garden & Nature Center IncPhiladelphia | Form 990-N | No figure |
| Friends of Lower ProvidenceAudubon | Form 990-N | No figure |
| Bobs Creek Stream GuardiansImler | Form 990-N | No figure |
| Chest Creek Watershed Alliance IncPatton | Form 990-N | No figure |