[WAGNER, CAMP, and BECKER]. -- WAGNER, Henry. The Plains and the Rockies. San Francisco, 1921. 8o. Original cloth. -- WAGNER, Henry. The Plains and the Rockies. Columbus, Oh, 1953. Third ed. 8o. Original cloth. -- WAGNER, Henry. The Plains and the Rockies. San Francisco, 1937. Revised and extended by Charles L Camp. 8o. Original cloth. -- WHITE, David. News of the Plains and Rockies. Spokane, 1996. Vol. I. 8o. Original cloth. Together, 4 works in 4 volumes. Condition varies. (4)