Benton Co. 1840 Census; Heads of Household
Benton County 1850 Census
Benton County, Arkansas Genweb Project a collection of online resources for genealogy researchers
Benton County, AR Genealogy Forum read and post messages about your ancestors for this county
Federal Land Records - Benton 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 Benton Co. Arkansas
US GenWeb Archives for Benton County cemeteries, newspapers, wills, military rosters etc recorded online
World War II Honor List of Dead and Missing Personnel, Benton County page 1 and page 2

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
Arkansas Marriage Records
Arkansas Divorce Records
Arkansas Death Records