High Quality Content by WIKIPEDIA articles! The New England Historic Genealogical Society (NEHGS) is the oldest and largest genealogical society in the United States, founded in 1845. A charitable, nonprofit educational institution, NEHGS is located at 99-101 Newbury Street, in Boston, Massachusetts, in an eight-story archive and research center. Today it has over 25,000 members worldwide and a 50-person staff. Its mission is to "collect, preserve, and interpret materials to document and make accessible the histories of families in America."