The Mighty Colorado River: From the Glaciers to the Gulf by Jim Turner
"Here's your chance to take a trip down one of the world's great rivers from its first trickle to its broad delta. Ride along (and stay dry all the way!) as the mighty Colorado falls from a tundra to desert, through six states and two countries, through eons of geological history, past bighorn sheep and tiny lizards, through towns and wilderness, and of course, through the unforgettable colors and vistas of the grandest canyon on earth."
-back cover