Subject
West (U.S.) History
2
Dinosaur tracks
1
Fort Laramie (Wyo. : Fort) History
1
Frontier and pioneer life
1
Geology
1
Geology, Stratigraphic
1
High Plains (U.S.) History
1
High Plains (U.S.) History, Military
1
Indians of North America Wars
1
Surveying
1
Surveying History
1
West (U.S.) Discovery and exploration
1
West (U.S.) History, Military
1
Wyoming History
1