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Hull History Centre
Records of Humber Conservancy and the Humber Ports (Records deposited by Associated British Ports and its Predecessors)
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Humber Conservancy
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Secretary's Office: General Administration
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Correspondence/Subject Files
> File 150 | 1939 Secret 'Fog Syrens on Piers, Jetties, etc, on Humber discontinued in pursuance of Control of Noise (Defence) Order, 1939 – use of Electric Horns on Upper Humber Floats to be continued'
File 150 | 1939 Secret 'Fog Syrens on Piers, Jetties, etc, on Humber discontinued in pursuance of Control of Noise (Defence) Order, 1939 – use of Electric Horns on Upper Humber Floats to be continued'
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