When Clyde Eddy first saw the Colorado River in 1919, he vowed that he would someday travel its length. Eight years later, Eddy recruited a handful of college students to serve as crewmen and loaded them, a hobo, a mongrel dog, a bear cub, and a heavy motion picture camera into three mahogany boats and left Green River, Utah, headed for Needles, California. Forty-two days and eight hundred miles later, they were the first to successfully navigate the river during its annual high water period. This book is the original narrative of that foolhardy and thrilling adventure.