The Grand Canyon has always fascinated and inspired me since my first visits to the magical world of the Canyon in the 1960's. As fate would have it, there are now three books on Grand Canyon by my pen (computer, actually), and one by another I was lucky enough to edit. It has been an honor to walk the entire 277 mile length of the Grand Canyon. River running history has always interested me and I try to add it to Wikipedia where I can. As Otis "Dock" Marston once said, "The questions to ask are "Is it true?" and "How do you know?""