| Federated Garden Clubs of Maryland IncGibson Island | Form 990-N | No figure |
| Federated Garden Clubs of Maryland IncTowson | Form 990-N | No figure |
| Federated Garden Clubs of Maryland IncTowson | Form 990-N | No figure |
| Federated Garden Clubs of Maryland IncAnnapolis | Form 990-N | No figure |
| Federated Garden Clubs of Maryland IncTowson | Form 990-N | No figure |
| Federated Garden Clubs of Maryland IncFrederick | Form 990-N | No figure |
| The Park and Resources Conservation Foundation IncGlenn Dale | Form 990-N | No figure |
| Federated Garden Clubs of Maryland IncBaltimore | Form 990-N | No figure |
| Federated Garden Clubs of Maryland IncPhoenix | Form 990-N | No figure |
| Wiltondale Garden ClubTowson | Form 990-N | No figure |
| Federated Garden Clubs of Maryland IncBerlin | Form 990-N | No figure |
| Federated Garden Clubs of Maryland IncFrederick | Form 990-N | No figure |
| Federated Garden Clubs of Maryland IncCumberland | Form 990-N | No figure |
| Federated Garden Clubs of Maryland IncWhite Hall | Form 990-N | No figure |
| Federated Garden Clubs of Maryland IncParkville | Form 990-N | No figure |
| Federated Garden Clubs of Maryland IncCockeysville | Form 990-N | No figure |
| The Federated Garden Club of Maryland IncCrofton | Form 990-N | No figure |
| Federated Garden Clubs of Maryland IncHavre de Grace | Form 990-N | No figure |
| Federated Garden Clubs of Maryland IncTowson | Form 990-N | No figure |
| Federated Garden Clubs of Maryland IncTowson | Form 990-N | No figure |
| Federated Garden Clubs of Maryland IncTaneytown | Form 990-N | No figure |
| Audubon Society of Central Maryland IncMount Airy | Form 990-N | No figure |
| Federated Garden Clubs of Maryland IncCambridge | Form 990-N | No figure |
| Federate Garden Clubs of Maryland IncWestminster | Form 990-N | No figure |
| John Street Park AssociationBaltimore | Form 990-N | No figure |
| Federated Garden Clubs of Maryland IncEllicott City | Form 990-N | No figure |
| Friends of Downs Park IncPasadena | Form 990-N | No figure |
| Carroll County Land Trust IncWestminster | Form 990-N | No figure |
| Hanover Road Association IncUpperco | Form 990-N | No figure |
| Kensington Land Trust IncKensington | Form 990-N | No figure |
| Environmental Crisis Center IncHampstead | Form 990-N | No figure |
| Western Shore Conservancy for the Protection of Natural Areas IncBowie | Form 990-N | No figure |
| Sun Day a Campaign for a Sustainable Energy Future IncTakoma Park | Form 990-N | No figure |
| Berkshire-Eastwood Recreation and Parks CouncilBaltimore | Form 990-N | No figure |
| Friends of the Nanticoke RiverNanticoke | Form 990-N | No figure |
| Flatwoods Cemetery MaintenanceMcHenry | Form 990-N | No figure |
| South Arundel Citizens for Responsible Development IncChruchton | Form 990-N | No figure |
| Tree-Land Foundation IncSandy Spring | Form 990-N | No figure |
| NCR Hereford Volunteers Association Inc of Gunpowder Falls State ParkMonkton | Form 990-N | No figure |
| Friends of Smallwood State Park IncMarbury | Form 990-N | No figure |
| Clear Spring Garden ClubClear Spring | Form 990-N | No figure |
| Woodland Committee Land Trust IncBaltimore | Form 990-N | No figure |
| Friends of the Maryland State Forests and Parks IncOcean City | Form 990-N | No figure |
| Conservancy for Charles County IncWaldorf | Form 990-N | No figure |
| Greater Sandy Spring Green Space IncSandy Spring | Form 990-N | No figure |
| Baltimore Herb Festival IncGwynn Oak | Form 990-N | No figure |
| Dickerson Community AssociationDickerson | Form 990-N | No figure |
| Citizens to Conserve and Restore Indian Creek Ccric IncGreenbelt | Form 990-N | No figure |
| Ames Shalom Community IncBaltimore | Form 990-N | No figure |
| Nanjemoy-Potomac Enviromental Coalition IncNanjemoy | Form 990-N | No figure |