Title: The mineral wealth of the Black Hills /
Authors: Connolly, Joseph Peter, 1890-1947.; O'Harra, Cleophas C. 1866-1935; O'Harra, Cleophas C. 1866-1935,
Publisher: [s.n.],
Year: 1929
Subjects: Mines and mineral resources Black Hills (S.D. and Wyo.); Black Hills (S.D. and Wyo.)