Present Scotts Bluff is but a part of the historic “Scott’s Bluffs” named for Hiram Scott, an employee of the Rocky Mountain Fur Company, whose skeleton was found in the vicinity in 1829. The first known published reference is to be found in _The Adventures of Captain Bonneville_, by Washington Irving, published in 1837. The first map to show this landmark is in Robert Greenhow’s _Memoir, Historical and Political on the Northwest Coast of North America_, published in 1840. It appeared next in the Fremont map of 1843, which became basic for later emigrant guides. _Early Exploration of the Great Plains_ In 1540 the Spaniard Coronado captained a treasure-hunting expedition from Mexico across Arizona, New Mexico, and the Texas Panhandle. From there he led a picked detachment of armored horsemen to mythical _Quivira_, which proved to be only a squalid Indian village in central Kansas. Contrary to long-held belief, Coronado never reached present Nebraska. The first Spaniards known to have penetrated this state—an exploring party of 1720 led by Pedro de Villasur—were massacred by Pawnees at the forks of the Platte. [Illustration: _Returning Astorians at Scotts Bluff Christmas Day, 1812._ Original sketch in Oregon Trail Museum.] Following LaSalle’s traverse of the Mississippi and the establishment of French settlements along that river, several French explorers—notably Bourgmont and Charlevois—penetrated the fringe of the Great Plains, bringing back reports of strange shaggy beasts in numbers so vast that they blackened the landscape. The Platte River was named by Frenchmen who explored its lower reaches; for this is the French word for “flat,” a literal translation of the Oto word, “Nebrathka.” The Upper Platte was not explored by Frenchmen until 1739 when the Mallet brothers lead a small party from the mouth of the Niobrara across Nebraska, up the South Platte, and thence to Santa Fe. The high tide of French exploration of the Plains was marked in 1743 by the long journey, on foot, of the Verendrye brothers from the Missouri River westward. How far west they traveled has been a widely debated subject, but most scholars believe that they reached the vicinity of the Black Hills of South Dakota.