Calvert County Historical Society
P.O. Box 358
70 Church Street
Prince Frederick, Maryland 20678
Phone: 410-535-2452, Fax: 410-535-4660

Southern Maryland Regional Library Association
P.O. Box 459
Charlotte Hall, MD 20622
Phone: 301-934-9442, 301-884-0436, 301-843-3634

Southern Maryland Studies Center
College of Southern Maryland
8730 Mitchell Road, P.O. Box 910
La Plata, MD 20646-0910
Phone: 301-934-7626, ext. 7107

Maryland Genealogical Society
201 West Monument Street
Baltimore, MD 21201

Maryland Historical Society
201 West Monument Street
Baltimore, Maryland 21201
Phone: 401-685-3750, Fax: 410-385-2105