United States » Illinois » Counties » Jefferson » General Resources

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• FamilySearch Wiki - Jefferson County, Illinois

  Free online Jefferson County, Illinois genealogical research guide.

• Genealogy Inc. - Jefferson County, Illinois Facts, Genealogy, Records & Links

• Genealogy Trails - Illinois Trails History & Genealogy - Jefferson County

• Linkpendium - Jefferson County, Illinois

• NACo (National Association of Counties) - County Explorer

• USGenWeb

• USGenWeb Archives