| Western Pennsylvania Mushroom ClubCoraopolis | Form 990-N | No figure |
| Wells Creek Watershed AssociationFriedens | Form 990-N | No figure |
| Ridge & Valley Stream KeepersEverett | Form 990-N | No figure |
| Friends of McConnells Mill State Park IncMercer | Form 990-N | No figure |
| Garden Club Federation of PennsylvaniaErie | Form 990-N | No figure |
| Bennetts Valley Rails to Trails AssociationWeedville | Form 990-N | No figure |
| Brush Creek Watershed AssociationCranberry Township | Form 990-N | No figure |
| Pennsylvania Native Plant SocietyBoalsburg | Form 990-N | No figure |
| Southwest Pennsylvania Air Quality Partnership IncMount Pleasant | Form 990-N | No figure |
| Kiskiminetas Watershed AssociationLeechburg | Form 990-N | No figure |
| Yellow Breeches Watershed AssociationMechanicsburg | Form 990-N | No figure |
| Punxsutawney Garden ClubPunxsutawney | Form 990-N | No figure |
| Conewango Creek Watershed AssociationWarren | Form 990-N | No figure |
| Paxton Creek Watershed & Education AssociationHarrisburg | Form 990-N | No figure |
| Tioga County Concerned Citizen CommitteeBlossburg | Form 990-N | No figure |
| Endless Mountains Nature CenterTunkhannock | Form 990-N | No figure |
| Pleasant Hills ArboretumPittsburgh | Form 990-N | No figure |
| Headwaters Natural Resource Center TrustErie | Form 990-N | No figure |
| WorldscienceDoylestown | Form 990-N | No figure |
| The Emmaus Commemorative Gardens FoundationEmmaus | Form 990-N | No figure |
| South Sandy Creek Watershed AssociationStoneboro | Form 990-N | No figure |
| Friends of Whites WoodsIndiana | Form 990-N | No figure |
| North Lake Improvement AssociationincSweet Valley | Form 990-N | No figure |
| Garden Club Federation of PennsylvaniaWest Chester | Form 990-N | No figure |
| Olde Richmond Civic AssociationPhiladelphia | Form 990-N | No figure |
| Briar Creek Association for Watershed SolutionsBerwick | Form 990-N | No figure |
| Upper Allegheny Watershed AssociationCoudersport | Form 990-N | No figure |
| American Association of Blacks in Energy - Philadelphia ChapterPhiladelphia | Form 990-N | No figure |
| Glen Rose ConservancyUnionville | Form 990-N | No figure |
| Aquetong Watershed Association IncNew Hope | Form 990-N | No figure |
| Wissahickon East Park FriendsPhiladelphia | Form 990-N | No figure |
| UspolyresearchAshland | Form 990-N | No figure |
| Guardians of the Brandywine IncGlenmoore | Form 990-N | No figure |
| Green Burial PittsburghVerona | Form 990-N | No figure |
| Philly Tree PeoplePhiladelphia | Form 990-N | No figure |
| Garden Club Federation of PennsylvaniaPhiladelphia | Form 990-N | No figure |
| Germantown Conservancy IncPhiladelphia | Form 990-N | No figure |
| Friends of Carpenters WoodsPhiladelphia | Form 990-N | No figure |
| Green Building FoundationKutztown | Form 990-N | No figure |
| New Eden Garden IncHermitage | Form 990-N | No figure |
| Burgh BeesPittsburgh | Form 990-N | No figure |
| Garden Club Federation of PennsylvaniaDuncansville | Form 990-N | No figure |
| Mid-Atlantic Renewable Energy Association IncWesttown | Form 990-N | No figure |
| Central Delaware Advocacy GroupPhiladelphia | Form 990-N | No figure |
| Conservation PennsylvaniaPhiladelphia | Form 990-N | No figure |
| Ambler Keystone Branch of Womans National Farm & Garden AssociationGwynedd Valley | Form 990-N | No figure |
| Community Justice LandPhiladelphia | Form 990-N | No figure |
| Bucks County Branch of Womans National Farm & Garden AssociationDoylestown | Form 990-N | No figure |
| Primrose Creek Watershed Association IncSolebury | Form 990-N | No figure |
| Protect Eagles Mere AllianceEagles Mere | Form 990-N | No figure |