- Paper: Off white
- Front cover detached 25%. Back Cover Detached. Water damage: Slight. Staple rust: Slight.
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May 1947. Mechanical science and technology magazine. Cover (not credited) features an artist depiction of the the Channel-Wing Plane created by inventor Willard R. Cluster. Featured articles in this issue include The Wing That Fooled the Experts, The Mechanics of Batting (baseball), Report from Antartica, Ultrasonics -- Magic Energy, and lots more. 6 1/2-in. x 9 1/2-in. 320 pages, PC/PB&W.
Cover price $0.25.