1874
A geological map of the Black Hills: by
Exploration Book
A geological map of the Black Hills: by
|
1875
Drawings of new fossils found on a recon
Exploration Book
Drawings of new fossils found on a recon
|
1874
Map of a reconnaissance of the Black Hil
Exploration Book
Map of a reconnaissance of the Black Hil
|
1874
Map of the Black Hills from a reconnaiss
Exploration Book
Map of the Black Hills from a reconnaiss
|