United Air Service Hearing[s] Before a Subcommittee of the Committee on Military Affairs, House of Representatives, Sixty-Sixth Congress, Second Session Volume 1-5

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1919 edition. Excerpt: ...these radio beacons along their routes for the purpose of guiding the machines. In misty weather, or anything of that kind, eventually it would become essential, when aviation had readied the point where they can fly irrespective of the weather. They have got to have something to' guide thom. Hearing is ...