( 1) Ordnance Survey Map (Scale / Date)
OS 6" 1925
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( 2) Northumberland County History
(ed M Hope Dodds) 15 - 1940 Page(s)480-7
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( 3) Archaeologia Aeliana : or miscellaneous tracts relating to antiquity
(air-photo) 28-1950
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( 4) Field Investigators Comments
F1 ASPhillips/07-MAY-1957/OS Archaeology Division Field Investigation
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( 5) Field Investigators Comments
F2 DSmith/17-JUN-1970/OS Archaeology Division Field Investigation
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( 6) Field Investigators Comments
F3 SAinsworth/11-DEC-1976/OS Archaeology Division Field Investigation
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( 7) Field Investigators Comments
Mark Bowden/08-JUN-1990/RCHME: Harbottle Castle Survey
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(7a) Externally held archive reference
Ryder, PF 1990 Harbottle Castle: a short historical and descriptive account. Unpublished.
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(7b) by H M Colvin, D R Ransome and John Summerson 1975 The history of the King's Works, volume 3 : 1485-1660 (part 1)
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(8) Scheduled Monument Notification
English Heritage Scheduling Amendment 16/8/94
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(9) David J Cathcart King 1983 Castellarium anglicanum : an index and bibliography of the castles in England, Wales and the Islands. Volume II : Norfolk-Yorkshire and the islands
2 - 1983 Page(s)334
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(10) Dodds, JF 1988 Bastions and Belligerents: Medieval Strongholds in Northumberland
Page(s)180-3
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(11) by H M Colvin, D R Ransome and John Summerson 1975 The history of the King's Works, volume 3 : 1485-1660 (part 1)
Page(s)253-4
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(12) Fred Allen 2006 England's Landscape: The North East
Page(s)58
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