On April 14, 1984, the organizational meeting of Harmony Hall Chapter, NSDAR, was held at Oxon Hill United Methodist Church. Chapter officers included: organizing regent, Mrs. Daniel E. Innamorato; first vice regent, Mrs. Lee A. Cahoon; chaplain, Mrs. Richard E. Massie; recording secretary, Mrs. William R. Faust; corresponding secretary, Mrs. George E. Sickmeyer; treasurer, Mrs. Dennis Manion; registrar, Mrs. George E. Lee; historian and librarian, Mrs. Arthur D. Cox. Special delegate, Mrs. George E. Lee, and Mrs. Donald Dietrich, guest speaker and State Regent, 1979-1982, dedicated the chapter to its founder, Mrs. James A. McCafferty. Mrs. McCafferty began her DAR association as a member of Children of the American Revolution at the age of fifteen. She served twice as a chapter regent, State Committee chairman, and volunteer genealogist at NSDAR. Mrs. McCafferty chose the name, Harmony Hall, because of the historic importance of Battersea/Harmony Hall in the area.
- The chapter received a Membership Award for achieving a 12% increase in membership by application in 2017.
- The chapter received the Maryland DAR award for Historic Preservation for our work with the Accokeek Foundation, supporting the restoration of the 1770s Laurel Branch Farmhouse- only two out of 45 chapters in Maryland were selected for this honor.
- We hosted a tour of Harmony Hall Manor, the chapter’s namesake and historic preservation interest built in the 1700s. The tour was led by the site’s administrator, National Capital Parks-East. Special guests included Dr. Douglas Bradburn, Founding Director of the George Washington Presidential Library at Mount Vernon, and Rushern L. Baker, III, Prince George’s County Executive. The property boasts the oldest known man-made canal and Want Water house constructed between 1690-1710 with the oldest known set of architectural plans.
- The chapter honored Vietnam veterans at the Maryland State Conference Awards Luncheon.
- The chapter sponsored a $2,000 Nannie Armistead I'Anson law scholarship for a University of Maryland student.