Oaksmith, Appleton (1827-1887)
- TePaske, John J. "Appleton Oaksmith, Filibuster Agent" North Carolina Historical Review (October 1958): 427-447.
Oden, Allen G. (1840-1894)
- Bishir, Catherine W. Crafting Lives: African American Artisans in New Bern, North Carolina, 1770-1900 (Chapel Hill: UNC Press, 2013), 281-282.
O'Hara, James Edward (1844-1905)
- Dictionary of North Carolina Biography
- Black Americans in Congress, 146-151, port.
O'Hara, Raphael (1872 - ?)
- History of the American Negro. North Carolina Edition. (Atlanta: A.B. Caldwell Pub. Co., 1921), 4: 107-109, port.
Oliver, Hannah Attmore (1860-1943)
- Lore, Richard. "Poor Little Sunshine, Mama Gave Her Away" Journal of the New Bern Historical Society (May 2002): 3-12, port.
Oliver, Mary Taylor (1859-1951)
- Gooding, James R. "Reminiscences of Miss Mary and the Attmore-Oliver House" Journal of the New Bern Historical Society (November 1989): 3-10.
Oliver, William H. (1829 - )
- Confederate Military History, Extended Edition (Wilmington, NC: Broadfoot Pub. Co., 1987), 5:676-677.
Osborne, John Chevor (d. 1819)
- Dictionary of North Carolina Biography