( 1) Ordnance Survey Map (Scale / Date)
OS 6" 1960
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( 2) Royal Commission on Historical Monuments (England) 1912 An inventory of the historical monuments in Buckinghamshire, volume one [south]
Page(s)125
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( 3) Field Investigators Comments
F1 ASP 21-FEB-72
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( 4) Oral information, correspondence (not archived) or staff comments
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( 4a) Aerial photograph
NMR, SP 7608/3
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