New York and London: John Wiley & Sons, Inc. 1938. Second Edition. vii, 257 pages. 8vo. Publisher's red cloth gilt (faded). Previous owner name "Jay Forrester 1340 J" penciled on front flyleaf. Hinges noisy. Good. Cloth. 
The preface notes this second edition adds chapters on power limits and stability, and calculation of fault currents. The treatment of mechanical principles has been considerably enlarged.
“Jay Wright Forrester (July 14, 1918 – November 16, 2016) was a pioneering American computer engineer and systems scientist. He is credited with being one of the inventors of magnetic core memory, the predominant form of random-access computer memory during the most explosive years of digital computer development (between 1955 and 1975). It was part of a family of related technologies which bridged the gap between vacuum tubes and semiconductors by exploiting the magnetic properties of materials to perform switching and amplification. He is also believed to have created the first animation in the history of computer graphics, a "jumping ball" on an oscilloscope.“ (wikipedia)