[Frejus Tunnel]. Maus, Enrico , and Pietro Paleocapa. Report ... On the studies he made of the railroad from Chambery to Turin. Turin, Royal Printing House, 1850. In 4° (313 x 210 mm); 56 pp. 9 plates engraved in lithograph by Ettore Lombardi and folded several times (restored tear to first two plates.) Coeval binding in half cloth (small defects). First edition with the captions of the plates also in French.The fine plates depict a large General map of the railroads executed and planned in the North and South of the Alps chain with routes outlined in red and a table of international railway distances, a map of the section from Modane to Susa of the railroad from Chambéry to Turin, a Plan of the surroundings of the northern entrance of the Alps tunnel, a Plan of the surroundings of the southern entrance of the Alps tunnel, three plans of the water-wheel building, a plan of the repair workshop, and a plate depicting a machine intended for the tunneling of the preparatory tunnel.