Belknap's Waterproof Grand Canyon River Guide

This is a map and guide to 290 miles of the Colorado River through Grand Canyon National Park. It includes geology, history, archaeology, natural history, and a photo workshop. The guide is water resistant.

120 pages, softcover, 5.5" x 8.25". c. 1969, 1989, 2007, Edition 2017 (Revised 2/17/17).