First Through The Grand Canyon: Being The Record Of The Pioneer Exploration Of The Colorado River In 1869-70 is a book written by John Wesley Powell and published in 1915. The book is a detailed account of the first expedition to explore the Grand Canyon, which was led by Powell himself. Powell was a geologist and explorer who was fascinated by the natural wonders of the American West, and he set out to explore the Colorado River and its canyons in...