Description
Illuminating the sign with ultra-violet light, which would not seem that different to the bluish blackout lights, 14 January 1942. *** Local Caption *** Mail Shop product listing CHANGING UNDERGROUND SIGN LIGHTING Mail Shop product summary Illuminating the sign with ultra-violet light, which would not seem that different to the bluish blackout lights, 14 January 1942.
Upload Date: 18 Oct 2017
Original Filename: eLib_2847490.jpg
Store Filename: 35546834.jpg
Keywords: eLib 2847490.jpg eLib 2847490.jpg FORTIES, LONDON, LONDON UNDERGROUND, RAILWAY UNDERGROUND, SIGNS, IP*2277430 WAR BRITAIN - LONDON SCENES - TRANSPORT - 1942 ..... Illumina
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