Jefferson County Mississippi 1860 slaveholders and 1870 African Americans: Largest slaveholders from 1860 slave census schedules and surname matches for African Americans on 1870 census.
Mississippi Department of Transportation: PDF map of Jefferson county roads. [Adobe Acrobat Reader required]
National Register of Historical Places - Jefferson County: Directory of historical places and cultural resources for the county. Offers historical significance, architect details, and related information.
US GenWeb - Jefferson County, MS: Local history and resources for genealogical researchers.