Hergesheimer, E. (1861) Map showing the distribution of the slave population of the southern states of the United States. Compiled from the census of. Washington Henry S. Graham. [Map] Retrieved from the Library of Congress,
Alfred Whital Stern Collection Of Lincolniana. (1863) The Question Settled. [New York: F. P. Whiting, -4?] [Image] Retrieved from the Library of Congress.