National Archives and Records Administration

DocsTeach is a product of the National Archives education division and is made possible in part through the National Archives Foundation. The site provides access to primary source materials related to the creation of Yellowstone and its early history.

National Archives and Records Administration. Photographs taken by William H. Jackson, photographer accompanying the U.S. Geological and Geographical Survey of the Territories directed by Ferdinand V. Hayden. Although Yellowstone National Park is emphasized, other prominent landmarks include Pike's Peak, Garden of the Gods, Long's Peak, Berthod Pass, Mountain of the Holy Cross, Uintah Mountains, and the Badlands.

An article on the early history of Yellowstone, including an extensive bibliography of primary, secondary sources, and related websites.

National Park Service

The Digital Public Library of America presents a large collection of primary source materials related to the early history of Yellowstone, including photograph and maps.