In the 1860s Major John Wesley Powell led a pioneering Grand Canyon expedition on this river
[DOC] [TLE] Powell Geographic Expedition of 1869 - Wikipedia [PAR] The Powell Geographic Expedition of 1869, led by American naturalist John 
Wesley Powell, ... Powell had spent much of his youth rafting the Mississippi 
River and its ... A Union major during the American Civil War, he lost his right arm 
to .... Lost in the Grand Canyon - Companion site to the PBS series about Jown 
Wesley... [DOC] [TLE] John Wesley Powell's life and achievements | The Museum | Powell ... [PAR] About the life of John Wesley Powell, early Colorado River Explorer and U.S. 
Geological ... of white men down the Colorado River through present day Grand 
Canyon.