Relief shown by shading.
Facsimile of manuscript map probably made in 1807 or 1808; original in collection of Boston Athenaeum.
An edition limited to 350 numbered copies.
Issued in case.
Case title: Map of the expedition under the command of Captains Lewis and Clark to the sources of the Missouri, thence across the Rocky Mountains and down the River Columbia to the Pacific Ocean, performed during the years 1804-5-6 by order of the government of the United States / original drawing by N. King, from Lewis and Clark's observations. Published by the Boston Athenaeum in association with Haley & Steele, MMIV.
Accompanied by folded sheet with caption title: Itinerary of the Lewis and Clark Expedition, 1804-5-6.