Wagner, Henry R., and Charles L. Camp. THE PLAINS AND THE ROCKIES: A CRITICAL BIBLIOGRAPHY OF EXPLORATION, ADVENTURE AND TRAVEL IN THE AMERICAN WEST 1800‑1865. San Francisco: John Howell ‑ Books, 1982. 4th edition, revised, enlarged, and edited by Robert H. Becker. 745 pp., brown cloth. Printed at the Arion Press, San Francisco. An essential reference volume. Near fine.