Oversized hardcover. Harry N Abrams, 1988, first edition, first printing. In near fine condition with DJ in mylar. Zebulon Pike, Joseph Walker, Jedediah Smith, Jim Bridger, Kit Carson, John C. Fremont, John Wesley Powell. These are only a few of the hundreds who came lonely lives as trappers, from the Army and Government departments, from universities and museums to set off on expeditions under the banner of knowledge.