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Explorers West (U.S.) Biography Frontier and pioneer life West (U.S.) Fur trade West (U.S.) History 19th century Jefferson, Thomas 1743-1826 Overland journeys to the Pacific Pioneers West (U.S.) Biography United States Territorial expansion West (U.S.) Description and travel West (U.S.) Discovery and exploration West (U.S.) History To 1848chat loading...