Afro-American Historical and Genealogical Society
DC Metropolitan Area Italian Genealogical Society
Historical Society of Washington, D.C.
Jewish Genealogical Association of Greater Washington, DC
Mid-Atlantic Germanic Society
National Italian American Foundation a non-profit organization dedicated to preserving and promoting the heritage and culture of Americans of Italian descent
National Society Daughters of the American Revolution
Society of The Cincinnati The Society of the Cincinnati was founded at the close of the Revolutionary War by the officers of the Continental line and their French counterparts, who had served together in the struggle for American independence. They wished to preserve the rights and liberties for which they had fought and to foster the bonds of friendship that had been formed among them during the long years of war.
Supreme Court Historical Society
The Washington DC Metropolitan Area Italian Genealogical Society
United States Capitol Historical Society
Women in Military Service for America Memorial Foundation, Inc.

Additional Resources

Washington, DC Obituaries enter your Washington, DC ancestor's name to search obituaries in over 75 million newspaper pages
Washington, DC Birth Records
Washington, DC Marriage Records
Washington, DC Divorce Records
Washington, DC Death Records