Colorado State School of Mines Annual Report of Field Work and Analyses Geology of Colrado Coal Deposits.
Denver: News Printing Company, 1889. Limp. 23.5 x 15.5 cm. Octavo. 265pp. Index and errata. Bound into brown limp leather. Illustrated with 16 plates (complete) numbered I - XV and A (not in order), most of which are fold-out including the color frontispiece frontispiece. The binding is chipped and worn..... More