The Ancestry Library is the largest online family history resource (viewable only at the library due to licensing agreements but a personal subscription is available on the Ancestry website).
Find a Grave
Find a Grave is a free resource for finding the final resting places of family members, friends, and famous folks.
Harrison County Genealogical Society
The Harrison County Genealogical Society research collection includes historical information which may be useful to researchers of Harrison County history and genealogy in the form of books, journals, maps, microfilm, pictures, scrapbooks, and more.
Harrison County Research Center
The Research Center provides opportunity to explore the past of Harrison County and Texas via photographs, books, artifacts, and documents and is part of the Harrison County Historical Museum.
Heritage Quest Online
Via TexShare Databases, research materials to trace family lineage. Once logged in, click on the "Genealogy and History" tab to get started.
Texas State Library Genealogy Resources
The Genealogy Resources include microfilm of the federal census schedules for all states through 1910, selected states from the 1920 and 1930 censuses, printed family and county histories, and a variety of Texas government records plus a whole lot more!