Map shows mid-nineteenth century Iowa, Missouri, Illinois and Indiana counties, roads, canals, mining activity, cities and towns. Includes legend. Scale not given.

Map series shows the route taken by John C. Frémont in 1842-1844 on his trip from Westport on the Missouri River to Oregon. This map section shows 275 miles of road west from Westport landing along the Kansas River, Blue, and Little Blue Rivers. Includes notes and table of Meteorological Observations. Relief shown by hachures. Scale [1:633,600].