Map of the Yellowstone and Missouri Rivers and their tributaries.

Map shows railroads, trails, routes of exploration, military posts, battle locations, Native American habitation in "Dakota" [Territory], Nebraska, and eastern Wyoming. Includes expedition dates, authorities, and text notes. Relief shown by hachures. Scale 1:1,200,000.
Date: 1876
Creator: Gillespie, G. L.
System: The Portal to Texas History

Progress map of lines and areas of explorations and surveys conducted under the auspices of the War Department: giving the area of the public domain lying west of the 100th. meridian of longitude, with an index illustration of a series of atlas maps / prepared under the direction of Geo. M. Wheeler, Corps of Engineers.

Map shows the names of military explorers, dates, and historical routes of their exploration from the Mississippi River to the Pacific Ocean. Displays railroads, "military posts," Indian agencies, existing and proposed astronomical stations, existing and proposed telegraph lines, state boundaries, major cities, public lands, Indian Territory, Dakota Territory, and area statistics "West of 100th Meridian" in square miles. Includes legend and index. Relief not shown. Scale [1:6,000,000].
Date: 1873?
Creator: United States. Army. Corps of Engineers.
System: The Portal to Texas History

Map showing the location of the Yellowstone National Park and its prospective railroad connection with the Eastern States.

Map shows state boundaries, railroads, cities, towns, military outposts, and notable geographic points, and particularly Yellowstone National Park, for the northern United States from the Pacific Coast to the the Great Lakes; Dakota [Territory], township grid for Minnesota, mineral resources. Includes notes. Relief shown by hachures and spot heights. Scale not given.
Date: [1872..1889]
Creator: National Railway Publication Company
System: The Portal to Texas History

County map of Colorado, Wyoming, Dakota, Montana.

Map shows counties, roads, railroads, military outposts, areas of Indian habitation, mountain passes, cities, towns, and notable geographic features. Includes notes. Scale [ca. 1:3,540,000].
Date: 1874
Creator: Mitchell, S. Augustus, Jr. (Samuel Augustus)
System: The Portal to Texas History

County map of Kansas, Nebraska, Colorado, Dakota, Wyoming, Montana.

Map shows counties, existing railroads, proposed railroads, cities, towns, military posts, areas of Native American habitation, military roads, and notable physical features. Includes notes. Relief shown by hachures. Scale not given.
Date: 1872
Creator: Mitchell, S. Augustus, Jr. (Samuel Augustus)
System: The Portal to Texas History