00761cam a22002291 4500 rc 01000027 DLC 20260227111858.0 731031s1875 xx 000 0 eng rc 01000027 (OCoLC)732673 DLC OGraD NNBG DLC premarc F657.B6 U5 United States. Army. Corps of Engineers. Report of a reconnaissance of the Black hills of Dakota, made in the summer of 1874, by William Ludlow. Washington, Govt. Print. Off., 1875. 121p. plates,3 fold. maps. 30cm. Black Hills (S.D. and Wyo.) United States Discovery and exploration. Ludlow, William, 1843-1901. 51711 51711