( 1) Ordnance Survey Map (Scale / Date)
OS 6" Prov. Edn., 1921-46.
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( 2) Ordnance Survey Map (Scale / Date)
OS 25" 1923.
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( 3) Royal Commission on Historical Monuments (England) 1910 An inventory of the historical monuments in Hertfordshire
Page(s)113
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( 4a) General reference
Pipe Rolls 17 Henry II (Pipe R. Soc.) 118.
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( 4b) General reference
Exchequer Accounts bundle. 465, no.15.
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( 4c) General reference
Duchy of Lanc. Special Com. no. 813.
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( 4) edited by William Page 1912 The Victoria history of the county of Hertford, volume three
The Victoria history of the counties of England Page(s)503-6
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( 5) by Geo T Clark 1884 Medieval military architecture in England. Volume 2
Page(s)119-23
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( 6d) General reference
Hen. Huntingdon. lib. 5, fol. 353.
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( 6e) General reference
Chron. Sax. fo. 103.
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( 6) General reference
History of Hertfordshire vol. 2, 1821, pp. 138-141. (R. Clutterbuck).
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( 7) Transactions of the East Hertfordshire Archaeological Society
Newsletter No. 2, 1951.
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( 8) General reference
The Chronicles of Hertford Castle. 1947, illustrated. (H. C. Andrews).
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( 9f) Royal Commission on Historical Monuments (England) 1910 An inventory of the historical monuments in Hertfordshire
Page(s)113
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( 9g) edited by William Page 1912 The Victoria history of the county of Hertford, volume three
The Victoria history of the counties of England Page(s)503
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( 9h) General reference
National Buildings Record
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( 9i) General reference
Ministry of Works and Buildings
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( 9) General reference
Min. Town & Country Planning. Ref. No. 1204/11/A. April, 1948, p.1.
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(10) General reference
Min. Town & Country Planning. Ref. No. 1204/11/A. April, 1948, p.21-2
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(11) Field Investigators Comments
F1 CFW 12-AUG-60
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(12) Medieval archaeology : journal of the Society for Medieval Archaeology
16, 1972 Page(s)181
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(13) Field Investigators Comments
F2 JRL 19-DEC-75
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(14) St. Albans & Hertfordshire Architectural and Archaeological Society and East Hertfordshire Archaeological Society Hertfordshire archaeology
G Moodey 3, 1973 Page(s)100-9
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(15) Medieval archaeology : journal of the Society for Medieval Archaeology
19, 1975 Page(s)239
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(16) St. Albans & Hertfordshire Architectural and Archaeological Society and East Hertfordshire Archaeological Society Hertfordshire archaeology
M R Petchey 5, 1977 Page(s)168-9
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(17) General reference
DOE (IAM) List Anc Mons 3 1978 52
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(18) Ordnance Survey Map (Scale / Date)
OS 1:10 000 1978
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(19) 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)220
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(20) R Allen Brown, H M Colvin and A J Taylor 1963 The history of the King's Works, volume 2 : the Middle Ages
Page(s)677-681
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(21) 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)254-7
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(22) St. Albans & Hertfordshire Architectural and Archaeological Society and East Hertfordshire Archaeological Society Hertfordshire archaeology
Zeepvat RJ and Cooper-Reade 12, 1994-6 Page(s)15-40
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