( 1) Ordnance Survey Map (Scale / Date)
OS 6" 1929-38
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( 2) General reference
VCH Vol.6 1911 p.487 (W Farrer & J Brownbill)
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( 3a) General reference
Whalley 206,222. (Whitaker)
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( 3) General reference
Trans. Lancs & Ches. Ant. Soc. Vo.19 1901. p.32. map (Wm Harrison)
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( 4) General reference
Surveyed by F.D.Colquhoun 16.2.59
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(5) General reference
English Heritage SAM List Lancs March 1994 4
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