After several months of preparation Army Capt John Macomb, civilian engineers and staff, and an Army escort left New Mexico on an expedition to the confluence of the Green and Colorado Rivers. Exploring Desert Stone (Utah State University, 2010) is the factual story of Macomb's journey, formally called the San Juan Expedition. Author and historian Steven Madsen put many hours of research into this book, hiked parts of the company's trail in Utah, and traveled to other states to make first-hand use of the journals, letters, and notes from the expedition.
Told principally in the words of the cartographers and scientists, the book reads well and illustrates the difficult logistics of travel across the southwestern landscape. The first part of the book narrates the exploration and travel, while the second half publishes for the first time the long forgotten letters and diaries of the major players in this engaging account. Tucked into a pocket at the back of the book is a reprint of the expedition map, compiled by Frederick von Egloffstein in 1864 using a novel (for the time) illustrative technique to highlight the topography of the area. Good read!