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

Additional Resources

Arkansas Obituary Search enter your Arkansas ancestor's name to search the world's largest newspaper archive; over 3 Billion newspaper articles
Arkansas Birth Records
Arkansas Marriage Records
Arkansas Divorce Records
Arkansas Death Records