In 1917 Zane Grey went on a five month hunting and fishing trip into vast areas of the Colorado wilderness. The travel party included his brother R. C. (Romer Carl "Reddy" Grey) and Romer's wife Reba, Dorothy Ackerman, Claire Wilhelm, and Mildred Fergerson. After taking a locomotive train from Denver, on the "Moffat Road" over the Continental Divide to Yampa, with their guide Scott Teague, they traveled by horseback over many high mountain passes and through spectacular meadows, open spaces, lakes and streams. This book "Zane Grey - On Colorado Trails" traces in great detail his adventures along with his descriptions of the beauty and perils encountered. This publication is fully illustrated with many authentic images not found in other Zane Grey books.