Alice Ferguson Foundation - The Alice Ferguson Foundation shares the wonder and excitement of the farm, woodlands, wetlands, and waterways of the Potomac River watershed with thousands of students, teachers, and citizens every year.
Dumbarton Oaks Park Conservancy - Dumbarton Oaks Park Conservancy is a nonprofit organization established in 2010 that is working to restore the 27-acre Dumbarton Oaks Park, formerly part of the Dumbarton Oaks estate in Georgetown, Washington, DC.
Eastern National - Eastern National stores offer a unique selection of items that include books, apparel, historical reproductions, collectibles, and kids’ items such as books and games. Eastern National stores are located in the Nature Center, Peirce Barn and the Old Stone House.
Friends of Chevy Chase Circle - Friends of Chevy Chase Circle is a local volunteer organization working with the National Park Service to renew, beautify, maintain, and protect Chevy Chase Circle, a historic landmark and a gateway to the Nation’s Capital.
Friends of Georgetown Waterfront Park - Friends of Georgetown Waterfront Park (FOGWP) is a nonprofit organization founded to raise awareness of the Georgetown Waterfront Park and to help support park enhancement and maintenance.
Friends of Peirce Mill - The Friends of Peirce Mill is a nonprofit volunteer organization formed in 1997 to restore to operating condition the historic Peirce Mill in Rock Creek Park.
National Park Foundation - The mission of the National Park Foundation is to enrich America’s national parks and programs through private support, to safeguard our heritage and inspire generations of national park enthusiasts.
Potomac Appalachian Trail Club - The Potomac Appalachian Trail Club, through volunteer efforts, education and advocacy, maintains and protects the Appalachian Trail and nearby lands as well as acquiring and maintaining other trails and related facilities in the Mid-Atlantic region for the enjoyment of present and future hikers.
Rock Creek Conservancy - Rock Creek Conservancy protects the lands and waters of Rock Creek and revitalizes Rock Creek Park for people to treasure and enjoy.