. . . . . . . . "History"@en . "History" . . . . . . "The Oregon Trail adventures on the prairie in the 1840's"@en . . "The Oregon Trail adventures on the prairie in the 1840's" . . . . . "The Oregon Trail : adventures on the prairie in the 1840's" . "The Oregon Trail : adventures on the prairie in the 1840's"@en . "Livres électroniques" . . . . . . . . . . . . . . . . . . . . . . . . "Electronic books"@en . . . . "The Oregon Trail"@en . "The Oregon Trail" . . . . . . . . "Francis@Parkman*1823-1893*" . . "Parkman, Francis, 1823-1893." . . "To 1899" . . "West (U.s.) Description and Travel." . . "Oregon National Historic Trail." . . "Oregon National Historic Trail" . "Electronic books." . . "Oregon National Historic Trail." . . "Indians of North America West (U.S.) History 19th century." . . "West (U.S.)" . . "Frontier and pioneer life West (U.S.)" . . "United States" . . "California National Historic Trail." . . "California National Historic Trail" . "Frontier and pioneer life" . . "United States, West" . . "Travel" . . "Frontier and pioneer life Wars (1994-1996) Biography West (U.S.)" . . "Indians of North America" . . "Great Plains" . . "Indians of North America History 19th century Biography West (U.S.)" . .