( 1) Ordnance Survey Map (Scale / Date)
OS 6" 1901
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( 2) General reference
VCH Herts 2 1908 205
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( 3) General reference
RCHM Herts 1910 102
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( 4) General reference
Arch J 116 1959 19 (J F Dyer)
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( 5) General reference
Anc Burial Mounds of Eng 1952 110 (L V Grinsell)
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( 6) General reference
EPNS Beds & Hunts 1926 120 (A Mawer & F M Stenton)
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( 7) Field Investigators Comments
F1 NKB 08-MAR-72
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( 8) General reference
Md Castles Herts 1971 16 (D Renn)
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( 9) General reference
Herts Past 12 1982 30-33 plans (N Doggett & J Hunn)
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(10) General reference
Hertfordshire Past 22 1987 29. (Doggett N and Hunn J)
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