Consisting of the following maps: the Columbia River for 90 miles from its mouth (1838), Map of North America (1850), Map of the United States of Mexico (1830), Map of the United States Territory of Oregon west of the Rocky Mountains exhibiting the various trading depots or forts occupied by the British Hudson Bay Company (1838), the Missouri River and Nebraska compiled by Charles Preuss (1846), topographical map of the road from Missouri to Oregon (1846), and Tunis railroad map of the United States and Canada (1859).