( 1) Ordnance Survey Map (Scale / Date)
OS 6" 1955
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( 2) Cotteswold Naturalists Field Club proceedings
(G F Playne May 1875) 6 - 1871-76 Page(s)228
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( 3) Ordnance Survey Map (Scale / Date)
OS 1" 1830
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( 4) General reference
Arch Handbook 1883 17 No 35 (G B Witts)
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( 5) General reference
Ancient Entrenchments and Camps 1919 74 (E J Burrow)
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( 6) by David Verey 1976 Gloucestershire : the Vale and the Forest of Dean
The buildings of England (D Verey) 1970 Page(s)82
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( 7) Field Investigators Comments
F1 MJF 08-FEB-71
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