Grand Canyon, a Century of Change: Rephotography of the 1889-1890 Stanton Expedition (Paperback)

From the Publisher: This book assembles the most dramatic of these paired photographs to demonstrate both the persistence of nature and the presence of humanity.As part of a plan to create a water-level railroad route along the Colorado River, Robert Brewster Stanton took photographs every one to two miles in 1889 and 1890. US Geological Survey hydrologist Webb has compiled photographs from the same perspectives taken between 1989 and 1995, juxtaposes them, and analyzes the changes and continuities across the century. The comparison represents one of the most extensive and detailed longitudinal studies of an ecological system ever provided. Annotation c. by Book News, Inc., Portland, Or.