Term Definition
Hagerman 1956

Hagerman, Percy. 1956. Notes on Mountaineering in the Elk Mountains, 1908–1910. Denver: Colorado Mountain Club.

Hits - 1014
Harper 1994

Harper, Kimball T., Larry L. St. Clair, Kaye H. Thorne, and Wilford M. Hess. 1994. Natural History of the Colorado Plateau and Great Basin. Niwot: University Press of Colorado.

Hits - 904
Harris 2012

Harris, Matthew L., and Jay H. Buckley. 2012. Zebulon Pike, Thomas Jefferson and the Opening of the American West. Norman: University of Oklahoma Press.

Hits - 999
Hayden 1867

Hayden, Ferdinand V. 1867. First Annual Report of the United States Geological and Geographical Survey of the Territories, Embracing Nebraska. Washington, DC: US Government Printing Office.

Hits - 1011
Hayden 1873

Hayden, Ferdinand V. 1873. First, Second, and Third Annual Reports of the United States Geological Survey of the Territories for the Years 1867, 1868, and 1869. Washington, DC: US Government Printing Office.

Hits - 1157
Hayden 1874

Hayden, Ferdinand V. 1874. Annual Report of the United States Geological and Geographical Survey of the Territories, Embracing Colorado: The Exploration for the Year 1873. Washington, DC: US Government Printing Office.

Hits - 1410
Hayden 1876

Hayden, Ferdinand V. 1876. Annual Report of the United States Geological and Geographical Survey of the Territories, Embracing Colorado and Parts of Adjacent Territories: Report of Progress of the Exploration for the Year 1874. Washington, DC: US Government Printing Office.

Hits - 1256
Hayden 1877

Hayden, Ferdinand V. 1877. Annual Report of the United States Geological and Geographical Survey of the Territories, Embracing Colorado and Parts of Adjacent Territories: Report of Progress of the Exploration for the Year 1875. Washington, DC: US Government Printing Office.

Hits - 1131
Hayden 1878

Hayden, Ferdinand V. 1878. Annual Report of the United States Geological and Geographical Survey of the Territories, Embracing Colorado and Parts of Adjacent Territories: Report of Progress of the Exploration for the Year 1876. Washington, DC: US Government Printing Office.

Hits - 1280
Hayden Survey 1877

Hayden Survey. 1877. Geological and Geographical Atlas of Colorado and Portions of Adjacent Territory. Washington, DC: US Government Printing Office.

Hits - 1405
Huber 1993

Huber, Thomas P. 1993. Colorado: The Place of Nature, the Nature of Place. Niwot: University Press of Colorado.

Hits - 1001
Humboldt 1845-52

Humboldt, Alexander von. 1845–52. Cosmos: A Sketch of a Physical Description of the Universe, vols. 1–3, translated by Elizabeth Sabine. London: Longman, Brown, Green and Longmans and John Murray.

Hits - 1045