- Front cover detached 5%. Back cover detached 10%.
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Volume 31, Issue 5 - March, 1944. Mechanical science and technology magazine. This issue's articles include; "The Terrible Handful" by Capt. George P. Hunt, "Cycles Predict the Future" by Donald Cooley, "Magic Cloak of Invisibility" by W.H. Kimball, "Continent of Tomorrow" by Henry Albert Phillips, "The Future of Electronics" by Dr. Irving Langmuir, "From Hawk to Thunderbolt" by Major J.J. Druzel, "Landing on the Enemy" by Beryl D. Kneen, and others . 6.75-in. x 9.5-in. 162 pages, BW/spot color.
Cover price $0.15.