Soft cover. Zustand: Very good. Pages 25, approx. 8 3/8 x 10 3/4 inches, softcover, Presented at the Massachusetts Institute of Technology March 17, 1948. Pictorial stapled wraps, ex-library. Mimeographed pages printed on one side only. Very Good condition. Interesting forecast of the the development of railway motive power for the following 25 years. 102504A Railroads.