Science: Chicago Show

Blue canvas for a ceiling stretched over Chicago's Coliseum last week. It was intended to represent the sky; few of the thousands who visited the first International Aeronautical Exposition under that dyed sky paid attention to it. Airport beacons flicked their beams about the room; few noticed them. People hurried around the Coliseum and two auxiliary show buildings to see and buy airplanes.

And buy they did—300 Command-Aires,† 500 American Eagles, 500 Travel Airs, 200 Swallows. Fairchild and Curtiss made large contracts for plane deliveries. Scarcely was there a plane manufacturer who did not...