Columbia Co. Genealogical Society
Columbia County, Arkansas Genweb Project a collection of online resources for genealogy researchers
Columbia County, AR Genealogy Forum read and post messages about your ancestors for this county
Federal Land Records - Columbia County compiled from the Bureau of Land Management land records and includes Homestead and Cash Entry Patents before 1908
The Tombstone Transcription Project - cemeteries for Columbia Co. Arkansas
US GenWeb Archives for Columbia County cemeteries, newspapers, wills, military rosters etc recorded online
World War II Honor List of Dead and Missing Personnel, Columbia County

Additional Resources

Arkansas Newspaper Search enter your Arkansas ancestor's name to instantly search the world's largest newspaper archive; over 12 million newspaper pages
Arkansas Birth Records
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Arkansas Death Records