REPORT OF A GEOLOGICAL EXPLORATION OF PART OF IOWA, WISCONSIN, AND ILLINOIS...IN THE AUTUMN OF THE YEAR 1839; WITH CHARTS AND ILLUSTRATIONS.
[Washington]: June 11, 1844. 28th Cong., 1st Sess. SD407. Collated complete: 191pp + 25 maps and plates (many folding, some colored). Disbound, Very Good plus. The original 1840 printing did not include "the maps and illustrations which are to be found in the later editions and which are of considerable..... More