Notes on the geology and mineral deposits of a portion of the southern Black Hills /

Eitemau Tebyg

• The Tertiary mineralization of the northern Black Hills
  gan: Connolly, Joseph Peter, 1890-1947
  Cyhoeddwyd: (1927)
• The minerals of the Black Hills
  gan: Ziegler, Victor
  Cyhoeddwyd: (1914)
• A history of the early explorations and of the progress of geological investigations in the Black Hills region
  gan: O'Harra, Cleophas C. (Cleophas Cisney), 1866-1935
  Cyhoeddwyd: (1900)
• ...The mineral wealth of the Black Hills
  gan: Connolly, Joseph Peter, 1890-1947
  Cyhoeddwyd: (1929)
• The geology, mineralogy and scenic features of Custer state park, South Dakota
  gan: O'Harra, Cleophas C. (Cleophas Cisney), 1866-1935
  Cyhoeddwyd: (1926)