Map showing the distribution of the slave population of the southern states of the United States, compiled from the census of 1860 / drawn by E. Hergesheimer ; engr. by Th. Leonhardt.Hergesheimer, E. (Edwin)1861"Census Office, Department of the Interior, Washington, Sept. 9th, 1861. After a careful examination of the above very interesting map I am prepared to state that it not only furnishes the evidences of great care in its execution, but can be relied on ascartographic