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FamilySearch Wiki - Washington County, Maryland.

Free online genealogical research guide for Washington County, Maryland.

Genealogy Inc. - Washington County, Maryland Facts, Genealogy, Records & Links

Linkpendium - Washington County, Maryland

Maryland State Archives - Guide to Government Records - Maryland County Information

Mid Maryland Roots

Old Court Records, marriages, maps, African Americans and more for the Mid Maryland areas of Frederick, Carroll, Washington, Garrett, Allegany and Montgomery Counties.

NACo (National Association of Counties) - County Explorer

Official County Web Site

USGenWeb Archives

Washington County, Maryland (USGenWeb)