For your consideration is this scarce "The Discovery of Yellowstone Park 1870" by Nathaniel Pitt Langford. The book was published by J.E. Haynes in 1905, this is a 1923 second edition. The book tells the story of the Washburn Expedition in 1870 and features many illustrations, photos, and maps. The book was written by N.P. Langford who was the diarist for the expedition and the first superintendent of Yellowstone. The condition of this book is good showing light wear to the green leatherette covers and good overall condition to the pages. The measurements of this book are 5" x 7".