( 1) General reference
OS 1:10 000 1978
( 2) General reference
RCHM Herts 1910 36
( 3) List of Buildings of Special Architectural or Historic Interest
DOE (HHR) Braughing RD Feb 1961 6
( 4) Field Investigators Comments
F1 NKB 12-NOV-71
Further information about monuments may be obtained by contacting NMR Enquiry and Research Services , through the English Heritage website.