"West (U.S.)" . . "Pioneers West (U.S.) Biography." . . . . "West (U.S.) Discovery and exploration." . . "Fur traders West (U.S.) Biography." . . "West (U.S.) History To 1848." . . "Overland journeys to the Pacific." . . . . "History"@en . . . . . "The story of American trappers and mountain men who played a major role in pushing the national frontier from the Mississippi River to the Pacific Ocean."@en . . . "Biography"@en . "A life wild and perilous"@en . . . . . . . . . . . . . . . . . "Trappers West (U.S.) Biography." . . "To 1848" . .