The Great Unknown The Journals of the Historic First Expedition Down the Colorado River By BY JOHN COOLEY Authors but as a critical political

but as a critical political and military training ground—or "rehearsal"—for the American Civil War that followed 15 years later

and psychological resilience in the skies

India: Land of the Black Pagoda is a 1930 travel book by adventurer Lowell Thomas

Published by Second Books

The Great Unknown The Journals of the Historic First Expedition Down the Colorado River By BY JOHN COOLEY Authors but as a critical political1988 Hardcover, first edition Very Good Condition Grand Canyon The Great Unknown: The Journals of the Historic First Expedition Down the Colorado River is a historical compilation edited by John Cooley, originally published in 1988 by Northland Publishing. The book presents a curated, day by day chronological account of John Wesley Powell's legendary 1869 exploration of the Grand Canyon and Colorado River, compiled directly from the surviving diaries,