This portfolio was issued to accompany Captain Marcy's book 'Exploration of the Red River of Louisiana, in the Year 1852'. The two maps contained record important explorations of the region of Texas, Oklahoma, Louisiana, New Mexico, Arizona, Missouri and Arkansas. The larger map is entitled 'Map of the Country Between the Frontiers of Arkansas and New Mexico embracing the section explored in 1849, 50, 51 & 52. Also a continuation of the emigrant road from Fort Smith and Fulton down the Valley of the Gila'. It incorporates information not only from Marcy's exploration but also those of Emory, Sitgreaves and Cordova. It extends from the Mississippi River to the Colorado River in the west, mostly depicting portions of Texas. It is bound with 'Map of the Country Upon Upper Red-River, Explored in 1852 by Capt. R.B. Marcy, 5th U.S. Infantry'. The lower portion illustrates a side-profile of the Wichita Mountains. Day, Maps of Texas 900; Howes M276; Wagner-Camp 226:1; Wheat Transmississippi West 791.