Popular Mechanics 1916-01

2/3

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French WW1 soldiers shown listening to the sky to hear oncoming airplanes: Electric ears detect invading air craft.

Artist:

Source: ebay seller powerangers

Restoration by: magscanner

Created on: Friday 3 February 2012
Posted on: Friday 3 February 2012
Tags: alert, defense, forecasting, intelligence, reception
Albums: General Magazines / Science and Technology Magazines / Popular Mechanics magazine
Visits: 1944