Lewis and Clarke’s journal to the Rocky Mountains in the years 1804, -5, -6; as related by Patrick Gass, one of the officers in the expedition.

New edition with numerous engravings. Dayton : Ells, Claflin, and Co., 1847. Octavo, later leather with title label, early ownership inscription to pastedown, pp. 238; (2 – advertisements), wood engraved plates, scattered foxing and a few stains, a folded slip of paper laid in with a note indicating it contains the original title label from an earlier binding. A good copy.

A scarce Dayton imprint of the long-lived Gass’s important account of the fabled journey of Lewis and Clarke across the newly acquired Louisiana Purchase. Gass’s account was the first to be published of the expedition, seven years before the official account.