Air raid defence exercise in London
Air raid defence exercise in London. A noise detector to hear approaching planes and an air raid defence cannon are in use. Photograph. England. July 23rd 1935
Picture No
10244933
Media ID
46037122
Size
3543px x 2745px
(488KB)
Credit
Mary Evans/brandstaetter images
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Approaching Detector Hear Noise Sihouette
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