FREMONT, JOHN CHARLES Report on an Exploration of the Country Lying Between the Missouri River and the Rocky Mountains on the Line of the Kansas and Great Platte Rivers. Washington: Printed by Order of the United States' Senate, 1843. [2] 200 pages. 8vo, disbound, sheets sewn together with string, housed in archival box with tan buckram clamshell case, gilt-lettered spine label. First edition. With five (of six) plates. Light soiling; two small repaired tears to title page; scattered brown spots; lacking frontispiece map and original wrappers.