Kata Kunci Pencarian:
- Expeditions and the protection of Yellowstone (1869–1890)
- Outline of Yellowstone National Park
- Washburn–Langford–Doane Expedition
- Yellowstone National Park
- Cook–Folsom–Peterson Expedition
- Hayden Geological Survey of 1871
- Outline of Montana
- Nathaniel P. Langford
- Philip Sheridan
- Missouri River
