First published in 1961, "The Natural History of the Lewis and Clark Expedition" was the first work to discuss in detail the contributions to America's natural history made by the Corps of Discovery (1804-1806), or the Lewis and Clark Expedition, as it is popularly known. Raymond Darwin Burroughs tallied the quantity of game killed and consumed during the course of the expedition. This paperback edition of Burroughs' work contains the entire original text, as well as a new introduction by Lewis and Clark scholar Robert Carriker. The major contribution of "The Natural History of the Lewis and Clark Expedition" was to organize and catalog the disparate discussions of animal and plant life that are scattered throughout the original journals by expedition members. These observations are presented in the explorers' words along with Burroughs's expert commentary."