Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 57. Chapters: 1953 American Karakoram Expedition, Astor Expedition, Brewster-Sanford Expedition, Cook-Folsom-Peterson Expedition, Crocker Land Expedition, First Grinnell Expedition, Geological Exploration of the Fortieth Parallel, Harriman Alaska Expedition, Hayden Geological Survey of 1871, Jesup North Pacific Expedition, MacGregor Arctic Expedition, Mangarevan Expedition, North Pacific Exploring and Surveying Expedition, Operation Deep Freeze, Perry Expedition, Pike expedition, Polaris expedition, Powell Geographic Expedition of 1869, Red River Expedition (1806), Ronne Antarctic Research Expedition, Roosevelt-Rondon Scientific Expedition, Saurian Expedition of 1905, Second Grinnell Expedition, Texas Tech Shackleton Glacier Expedition, United States Antarctic Service Expedition, Washburn-Langford-Doane Expedition, Wheeler Survey, Whitney South Seas Expedition, Yellowstone Expedition, Ziegler Polar Expedition. Excerpt: The Hayden Geological Survey of 1871 explored the region of northwestern Wyoming that later became Yellowstone National Park in 1872. It was led by geologist Ferdinand Vandeveer Hayden. The 1871 survey was not Hayden's first, but it was the first federally funded, geological survey to explore and further document features in the region soon to become Yellowstone National Park and played a prominent role in convincing the U.S. Congress to pass the legislation creating the park. In 1894, Nathaniel P. Langford, the first park superintendent and a member of the Washburn-Langford-Doane Expedition which explored the park in 1870, wrote this about the Hayden expedition: We trace the creation of the park from the Folsom-Cook expedition of 1869 to the Washburn expedition of 1870, and thence to the Hayden expedition (U. S. Geological Survey) of 1871, Not to one of these expeditions more than to another do we owe...