(1) Ordnance Survey Map (Scale / Date)
OS 6" 1969
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(2) General reference
Inf: G H Williams Local Historian Alverstoke
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(3) Field Investigators Comments
F1 ASP 22-JAN-69
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(4) General reference
"De Gomme's Map of Portsmouth 1688" Early Portsmouth Maps Portsmouth Rec Ser Portfolio 1 No 40 1978
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(5) General reference
The Western Defences of Portsmouth Harbour 1400-1800 1979 (G H Williams) Portsmouth Papers No 30
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(6) General reference
Coast Defences of Eng & Wales 1856-1956 2974 142 map 3 (I V Hogg)
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(7) General reference
Fortress Britain 1989 (A D Saunders)
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