Cleveland County, OK Genweb Project a collection of online resources for genealogy researchers
Cleveland County Message Board read and post messages with other genealogy researchers of this county
The Tombstone Transcription Project - cemeteries for Cleveland Co. OK
US GenWeb Archives for Cleveland County cemeteries, newspapers, wills, military rosters etc recorded online
Cleveland Co. Genealogy Forum read and post messages about your ancestors for this county
Cleveland County, Oklahoma Obits
World War II Honor List of Dead and Missing Army and Army Air Forces Personnel - Cleveland County

Additional Resources

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