Public Laws of the United States of America. Carefully Collated with the Originals at Washington (New York, Little, Brown & Company, 1868), xiii.
Horace Edgar Flack, The Adoption of the Fourteenth Amendment (Baltimore, MD: Johns Hopkins University, 1908), 167-168.
Cheryl A. Brooks, "Race, Politics, and Denial: Why Oregon Forgot to Ratify the Fourteenth Amendment," Oregon Law Review : Vol. 83, No. 2, p. 731-762