Very good original green cloth, clean and tight with bright gilt title on spine, and slight edgewear at the corners. Lithographs sketched in Iowa in 1868 and 1869, with numerous other illustrations, graphs and foldout elevations. Illustrated by 8 lithographs, fold charts. 1st edition. Pages viii, 391. Inside, hinges fine, pages clean and tight with slight foxing only on the frontispiece.