Acclaimed in his own time, Captain Randolph B. Marcy-trailblazer, geographer, fighter in the Mexican War, American Indian authority, and author-traveled as extensively as any other nineteenth-century explorer. Yet, Marcy has not achieved the fame of Lewis and Clark, Pike, Long, and Fremont, although he was the first to trace the Red River, in 1852. Marcy conducted five major expeditions through the West and drafted the first reasonably accurate maps of the Southwest. His advice to his military superiors led to the establishment of the chain of "Cross Timbers" forts from Fort Smith to New...