SCIENTIFIC AMERICAN, October 25, 1913, from New York. This issue contains the following prints, articles and/or ads: Airplanes from "The Race for the Gordon Bennett Cup", The Passaic Valley Sewer, The Work of Aircraft in the French Maneuvers, Motor-Driven Commercial Vehicle, Turbine Reduction Gear In Relation to Battleship Fighting Power. Irregular spine but in otherwise nice condition. See photo for additional details.