Cpl. Mackenzie is demonstrating a wireless telephone to the president at the White House in Washington DC. The inventor of the apparatus is seen speaking to a pilot in flight on an airplane. The demonstration received authorization from the censor on December 2, 1918.

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Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 21, 29, 1918, activities, airplane, american, apparatus, censors, communication, dc, demonstration, engineers, english, flight, house, inventor, mackenzie, military, notes, nov., photographs, pilot, president, technology, telephone, war, washi, washington, white, wireless, world