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

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