Colton's Territories of New Mexico, Arizona, Colorado, Nevada, and Utah.

Map shows southern boundary of Nevada along 37th line of latitude, eastern boundary of Idaho at the 104th line of latitude; mining activity, Pony Express Express and mail routes, expenditionary routes, proposed railroad routes, areas of Indian habitation, counties, and major cities. Relief shown by hachures and spot heights. Scale [ca. 1:4,400,000].
Date: 1855
Creator: unknown
System: The Portal to Texas History

Map of the New Mexico Arizona and Colorado Missionary Association.

Map shows mid-nineteenth century existing and proposed railroads lines, township grid, military posts, areas of Indian habitation and reservations, mines, cities, and towns. Includes geographic and historical notes. Relief shown by hachures. No scale given.
Date: [1858..1878]
Creator: Blanchard, Rufus, 1821-1904
System: The Portal to Texas History

Map no. 2. Rio Colorado of the west : explored by 1st Lieut. Joseph C. Ives, Topl. Engrs. under the direction of the Office of Explorations and Surveys, A. A. Humphreys, Capt. Topl. Engrs. in charge by order of the hon. John B. Floyd, Secretary of War.

Map shows mid-nineteenth century routes of exploration and navigation along the Colorado River. Relief shown by shading and hachures. Scale [ca. 1:760,320].
Date: 1858
Creator: Ives, J. C.
System: The Portal to Texas History