the exploration of western america 1800-1850

American animals Arkansas Basin Bear border buffalo California called Captain chapter climate coast Colorado Columbia Company considerable contains continued course covered crossed described discovered discovery divided early east expedition exploration falls feet flows forest forks formed geographical gives grass History Ibid important inches Indians interior J. C. Frémont Jefferson Journal journey known Lewis and Clark Louisiana March Mexico miles Mississippi Missouri mouth named natural navigation northern obtained Oregon Pacific party Pike places plains Platte prairies present range reached region Report result River Rocky Mountains route Salt Lake Santa Fé says side Sierra Nevada Snake snow South Pass southern Spanish St Louis stream survey timber trade trail Travels trees tribes tributaries United upper valley vegetation vols Washington western western America whole winter