( 1) Ordnance Survey Map (Scale / Date)
OS 1:10000 1970
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( 2) The Antiquaries journal : journal of the Society of Antiquaries of London
H D Barnes & W Douglas Simpson 32, 1952 Page(s)35-51
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( 3) The buildings of England
North-East Norfolk and Norwich 1962 Page(s)109
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(4) 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
Page(s)306
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(5) Fortress Study Group Fort : the international journal of fortification and military architecture
4, AUTUMN 1977 Page(s)76
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(6) Peter Kent 1988 Fortifications of East Anglia
Page(s)175
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