73. Mineral Springs of the United States. A. C. Peale. Bulletin No. 32, United States Geological Survey. Washington: Government Printing Office.

74. Mineral Springs of the United States. A. C. Peale. Popular Science Monthly, vol. xxx, p. 711.

75. Mineral Springs of the United States and Canada. G. E. Walton. Popular Science Monthly, vol. iii, p. 515.

76. Mineral Waters of the Y. N. P. A. C. Peale. Science, vol. xvii, p. 36.

Mitchell, S. W., [112].

Montana Historical Society, Transactions of, [114].

77. Mormons or Latter Day Saints, A History of. Captain J. W. Gunnison, U. S. A. Philadelphia: Lippincott, Grambo & Co. 1852. Also Philadelphia: J. B. Lippincott & Co. 1856. Page 151 contains a reference to Bridger’s knowledge of the geyser regions.

Mullan, John, [71].

National Park, Our Great, [83].