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Down the Great Unknown - Dolnick, Edward
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The epic adventures of the first white men to explore the Grand Canyon, the last unmapped region of the United States. By 1869, the map of the United States had long since been filled in. Only one mystery remained; an immense area of the south-west, larger than any state in the union and any country in Europe, remained unexplored. On May 24 1869 a one-armed Civil War veteran named John Wesley Powell and a ragtag band of nine men set out down the river to resolve the mystery. Three months later, defying ...

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Down the Great Unknown 2003, HarperCollins Publishers Ltd, London

ISBN-13: 9780006532231

Mass-market paperback

Down the Great Unknown 2002, HarperCollins Publishers Ltd, London

ISBN-13: 9780002571906

Hardcover

Down the Great Unknown 2002, Thorndike Press, Waterville, ME

ISBN-13: 9780783897769

Large type / large print

Hardcover