Description and travel 4 Descriptions et voyages Histoire 4 History 4 Travel 4 Clark, William, 1770-1838 2 Discovery and exploration 2 more ... Exploration 2 Lewis and Clark Expedition (1804-1806) 2 West (U.S.) 2 Columbia River 1 Description and travel--to 1848 1 Discoveries in geography 1 Ecology 1 Expeditions 1 Explorers 1 Frontier and pioneer life 1 Juvenile literature 1 Juvernile literature 1 Lewis and Clark Expedition--(1804-1806) 1 Lewis, Meriwether, 1774- 1 Lewis, Meriwether, 1774-1809 1 Missouri River 1 Natural history 1 Sciences naturelles 1 To 1848 1 West (U.S) 1 history 1 less ...