- Oakley: Oakley Family, Louise Oakley; Mary Louise Oakley; The Oakley Family at Hot Springs (photograph)
- Olive: A Olliff Family History/Unrelated Olive Lines that Resided in North Carolina, Robert Brooks Casey (some information about ancestry of Isham Olive of Henderson County); Olive Family Branches Genealogy, Linda McClellan and Report (Olive database), Robert D. McClellan (may not include Olives near Parker’s Crossroads but has family background and other Olives in West Tennessee)
- Ore/Orr: Descendants of William Ore(Orr), Jerry L. Butler
- Owens: Box of Unknown Pictures, Billy Reeves.