Loudon County, Virginia
@ Lionel Pincus and Princess Firyal Map Division. The New York Public Library
R.P. Smith's Map Manufactory United States. War Department. Corps of Engineers Hinkle, D Mathiot, G
DescriptionRelief shown by hachures.Manuscript note on map, "Copy no. 3; it's ned to Brig. Genl. S. Casey, on the 7 pf Nov. 1861; J.N. Macomb, Liet. Col. A.D.C. Chf. Topl. Engr. Army of the Potomac.
Hergesheimer, E. (Edwin)United States Coast SurveyMacomb, J. N.(John N.), 1810 or 1811-1889