Folder: Media archaeology Page 1 of 2

A four-horn acoustic locator, in England, 1930s. There are three operators, two with stethoscopes linked to pairs of horns for stereo listening.

471

Workmen fit a set of paraboloids in a sound detector for use by anti-aircraft batteries guarding the skies England, in a factory somewhere in England, on July 30, 1940.

469

The Voder as demonstrated by Mrs Harper at The Franklin Institute, c. 1939. The Voder (Voice Operation DEmonstratoR) was Bell Telephone Laboratory's first attempt to electronically synthesize human speech.

468

Antiaircraft sound locator apparatus with searchlight and transport, 1932 [Coast Artillery Corps, USA]

467

Soldiers operating an acoustic airplane locator during World War II, Trelleborg, Sweden, 1940. (Photo Carl Gunnar Rosborn]

466

Pigeons Bred with Camouflage, 1941
Camouflaged pigeons, with a mottled plumage to make them almost invisible to the enemy, were bred in Ontario, during WWII, by Ray R. Delhauer, a retired officer.
Believing that pigeons were too vulnerable because bright patches of white or colored feathers made them an easy target, Delhauer bred and crossbred his birds until he achieved a strain with mottled gray and dusty white feathers on their under-bodies as well as on their wings and backs.
(Popular Science, Jan, 194, p. 81)

428

U.S. Naval Air Station, Santa Ana, California, c. June 1945. pecialist (X) 2nd Class Marcelle Whiteman holds one of the 200 carrier pigeons based at NAS Santa Ana, circa June 1945. The birds were used to transmit communications from the air to the station when radio silence is in force. One of the occupations covered by the Specialist (X) rating was Pigeon Trainer. [Official U.S. Navy Photograph, now in the collections of the National Archives]

427

308

308

Helen Soros works the new pneumatic tube system to take cash at Marshall Fields store in Chicago, November 26, 1947.

307

307

N.Y. Post Office Pneumatic Tube, c. 1912. The first pneumatic tube mail system was installed in New York City in 1897. Each tube could carry between 400 and 600…

306

306

The War Office Sub-centre despatch room, London, 1925. Pneumatic messaging blows cylinders carriers inside tubes and was developed in London in the 1850’s as a way to handle…