This book summarizes the impact of John Muir in Southern California. Published in 1999, the book is a well-researched description of Muir's focus on nature, the mountains, and his many connections in this geography, especially Pasadena. I appreciated learning about his activities and time with many notable individuals, for example Theodore Roosevelt, Andrew Carnegie, Charles Lummis, A.C. Vroman and others. It leads to my continued reading about California history.