( 1) Ordnance Survey Map (Scale / Date)
OS 6" 1965
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( 2) Devonshire Association reports and transactions
26 (1894) Page(s)303-4
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( 3) Devonshire Association reports and transactions
64 (1932) Page(s)282-3
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( 4) Vertical aerial photograph reference number
(RAF/CPE/UK/2491 4344-5;11-MAR-1948)
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(5) Scheduled Monument Notification
21-JAN-1999
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