Appleman, Roy Edgar. Lewis and Clark : historic places associated with their transcontinental exploration (1804-06) / [electronic resource] / [by Roy E. Appleman]. — Washington, : U.S. National Park Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1975.. — viii, 429 p. : illus., maps 25 cm. - The National survey of historic sites and buildings, v. 13.