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David Douglasa naturalist at work an illustrated exploration across two centuries in the Pacific NorthwestBook由 Nisbet, Jack, 1949-
出版 2012 -
Life and labour in the far far Westbeing notes of a tour in the western states British Columbia Manitoba and the North-west territoryBook
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The Journals of Samuel Rutherford Dundass & George Kellercrossing the plains to California in 1849-1850Book出版 1983
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由 Hider, James
出版 2009 -
由 Feiler, Bruce. 1964-
出版 2004 -
Traces of the trailsa guide to historic trails and wagon road sites on public lands in eastern OregonBook由 Evans, Bob
出版 1998 -
由 Morse, Eric W.
出版 1962 -
由 Irving, Washington, 1783-1859
出版 1836