( 1) Ordnance Survey Map (Scale / Date)
OS 6" 1888
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( 2) Cornwall Archaeological Society Cornish archaeology
(R Warner) 1, 1962 Page(s)115
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( 3a) Externally held archive reference
Maps of Earthworks 1840 (R Thomas) Penzance Liby
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( 3) Journal of the Royal Institution of Cornwall
(C Henderson) 2, 1953-6 Page(s)8-9
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( 4) West Briton
Letter 24.10.1851 (R Thomas)
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