New York Times Bestselling Series! ""These books are, quite simply, brilliant. . . . Thrilling, bloody, action-packed stories from American history."" -New York Times Explore the Grand Canyon with John Wesley Powell in the New York Times bestselling graphic novel series! John Wesley Powell always had the spirit of adventure in him. As a young man, he traveled all over the United States exploring. When the Civil War began, Powell went to fight for the Union, and even after he lost most of his right arm, he continued to fight until the war was over. In 1869, he embarked with the Colorado River Exploring Expedition-ten men in four boats-to float through the Grand Canyon. Over the course of three months, the explorers lost their boats and supplies, nearly drowned, and were in peril on multiple occasions. Ten explorers went in, but only six came out.