Canyons of the Colorado by J. W. Powell

Produced by Eric Eldred CANYONS OF THE COLORADO BY J. W. POWELL, PH.D., LL.D., Formerly Director of the United States Geological Survey. Member of the National Academy of Sciences, etc., etc. WITH MANY ILLUSTRATIONS. First published 1895 PREFACE. On my return from the first exploration of the canyons of the Colorado, I found that our