Carter County, MO Genealogy Forum read and post messages about your ancestors for this county
Carter County, Missouri Land Patents 1831-1969
Carter County, MO Genweb Project a collection of online resources for genealogy researchers
Carter Co. Marriages 1881-1890
Carter County Surnames
Census-Online.com - census transcriptions for  Carter Co.
The Tombstone Transcription Project - cemeteries for Carter Co. MO
US GenWeb Archives for Carter County cemeteries, newspapers, wills, military rosters etc recorded online
World War II Honor List of Dead and Missing Personnel, Carter County

Additional Resources

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