( 1) Ordnance Survey Map (Scale / Date)
OS 6" 1955
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( 2) General reference
Little Guide, Linc. 2nd Edn. 1924, 292. (J.C. Cox)
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( 3) Field Investigators Comments
F1 BHS 16-MAR-64
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(4) General reference
English Heritage, Scheduling Amendment, Lincolnshire, 13-OCT-1994
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