Organization Reserve Officers Association

American Association of State and Local History

American Historical Association

United States Commission on Military History

Authors Guild

Authors League of America

National Book Critics Circle

Maryland Historical Society

Society for the Preservation of Maryland Antiquities

North Carolina Historical and Literary Association

Virginia Historical Society

Baltimore Bibliophiles

St. George's Society of Baltimore

Manuscript Society

Edgar Allan Poe Society

Association of Former Intelligence Officers

Council on Abandoned Military Posts

Circumnavigators Club