(1) List of Buildings of Special Architectural or Historic Interest
District of York, 14th March 1997
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(2) Scheduled Monument Notification
EH Scheduling amendment, 31st March 1992
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(3) Royal Commission on Historical Monuments, England 1972 An inventory of the historical monuments in the City of York. Volume II: the defences
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(4) by the late B H St J O'Neil 1982 Clifford's Tower, York Castle
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(5) 1987 Clifford's Tower and the castles of York
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(6) by D F Renn 1971 Clifford's Tower and the castles of York
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(7) by Nikolaus Pevsner and David Neave 1995 Yorkshire : York and the East Riding
The Buildings of England Page(s)190-191
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(8) by B H St J O'Neil 1946 Clifford's Tower, York Castle
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(9) General reference
Ministry of Works. 1960. Clifford's Tower, York Castle: Guide (BH St J O'Neil)
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(10) Aerial photograph
SE 6051/1-12 29/04/1970; SE6051/14 (postcard); SE6051/113-16 01/01/1980; SE6051/17, 62 22/07/1983; SE6051/37-8 05/05/1988
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(11) Aerial photograph
SE6051/41-4 03/08/1991; SE6051/45-9, 69-73 29/07/1991; SE6051/50-1 07/08/1991; SE6051/64, 66-8 08/08/1991; SE6051/93-110 24/12/1991
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(12) Aerial photograph
SE6051/40, 51-61 11/01/1992; SE6051/75-8 11/06/1992; SE6051/111-12 31/10/1992
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(13) Aerial photograph
SE6051/80-7, 92 06/03/1993; SE6051/184-5, 190 27/03/2002
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(14) 2009 English Heritage Visitor Handbook 2009/10
Page(s)201
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(15) World Wide Web page
Clifford's Tower, Tangled Spider, no date. "Clifford's Tower" http://www.cliffordstower.com/ [Accessed 21-MAY-2009]
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(16) English Heritage 1995 Clifford's Tower and the jews of medieval York
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