History 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. Elektronisk resurs

Förlag	År	Ort	Om boken	ISBN
Bradford and Inskeep	1814	USA, Philadelphia	2 vol. (xxviii, 470 sidor. ix, 522 sidor.) : karta