- Front cover detached 10%. Back cover detached 5%. Water damage: Extensive. Staple rust: Moderate.
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Volume 18, Issue 4 - August, 1937. Mechanical science and technology magazine. This issue's articles include; "Adventures of the Poison Squad" by James N. Miller, "Is There a Speed Limit?" by Don Glassman, "36 Killed on the Hindenburg, but Records Prove That Zeppelins Are Safe" by Bob Gordon, "Racing the Homing Pigeon" by W.R. Stamford, "Dogs - Diamond Guardians" by Lawrence G. Green, "Inventions Needed in Field of Electrochemistry" by Richard H. Parke, "Restocking the Ocean" by C.S. van Dresser, "You're Buying a House!" by Alfred Dolid, and others. 6 1/2-in. x 9 1/2-in., 154 pages, BW/spot color.
Cover price $0.15.