In top margin: Brig. Genl. A.A. Humphreys, Chief of Engineers, U.S.A. ; Brig. Gen'l A.H. Terry, comdg department., Includes notes indicating general topography., Relief shown by hachures and spot heights., and Shows exploration routes and dates.
Publisher:
American Photo-Lithographic Co.,
Subject (Geographic):
Black Hills (S.D. and Wyo.)--Maps and Dakota Territory--Maps