JIayden, Dr. F. V., Assistant.Geological report of the exploration 
, '1. ofthe Yellowstone and Missouri Rivers. Under the direction 11.; of Capitain (now Lieut.-Col. and brevet Brig. Gen.) W. F. Ray


no I d s, corps of engineers, 1859-60. (Mit 1 Karte.) 

8. Washington (Government Printing office) 1869.