( 1) Ordnance Survey Map (Scale / Date)
OS 6" 1923
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( 2) General reference
Hist of Durham 3, 1823, 279-84 (R Surtees)
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( 3) General reference
Archit Ants of Durham 1846, 56 (Illus) (RW Billings)
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( 4) General reference
Guide to Durham 1892 528 (JR Boyle)
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( 5) Field Investigators Comments
F1 FDC 18-MAY-59
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( 6a) General reference
Symeon of Durham 2 316
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( 6) by Derek Renn 1973 Norman castles in Britain
Page(s)242
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( 7) List of Buildings of Special Architectural or Historic Interest
DOE (HHR) Spennymoor UD Jan 1950 1
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(8) List of Buildings of Special Architectural or Historic Interest
District of Sedgefield, 14-Jun-1988
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(9) by David J Cathcart King 1983 Castellarium anglicanum : an index and bibliography of the castles in England, Wales and the islands. Volume I : Anglesey - Montgomery
Page(s)139
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