Written in 1854, "Exploration of the Red River of Louisiana, in the Year 1852" is a more detailed account of the United States army expedition briefly described in author R.B. Macy's book "Thirty Years of Army Life on the Border." The military had tried and failed several times before to explore the Red River's uncharted waters before finally launching this successful mission. "Exploration of the Red River" reads like a diary but contains all the necessary information for a report on the expedition. Macy included descriptions of the Indians encountered, wildlife, plant life, scenery, attached waterways and lakes, and appendicies of the courses and distances charted, minerals, fossils, animals, plants, and Indian languages. This is a highly valuable and detailed text for anyone researching 19th century U.S. expansion and discovery of territories.