Barrett, J. A. (1891). Evolution of the Ordinance of 1787: With an account of the earlier plans for the government of the Northwest territory. New York: G.P. Putnam's Sons.

Barrett, Jay Amos. Evolution of the Ordinance of 1787: With an Account of the Earlier Plans for the Government of the Northwest Territory. New York: G.P. Putnam's Sons, 1891.

Barrett, Jay Amos. Evolution of the Ordinance of 1787: With an Account of the Earlier Plans for the Government of the Northwest Territory. New York: G.P. Putnam's Sons, 1891.