Volume 34, Issue 7 - May, 1948. Mechanical science and technology magazine. This issue's articles include; "What it Takes to Qualify as a Driver at Indianapolis" by Tom McCahill, "Photos Taken Through the Surgeon's Eyes" by Don Romero, "Electric Brain Camera" by Robert Hertzberg, "10 Million Eavesdroppers" by Gilbert Paust, "Electric Mind-Reader" by Ralph Winnett, and others. 6.75-in. x 9.5-in. 208 pages, BW/spot color.
Cover price $0.15.