(1) Migrated Defence of Britain Project database record originally compiled from various sources
The two databases developed by the Project can be searched on-line through the Archaeology Data Service at http://ads.ahds.ac.uk/catalogue/specColl/dob/index.cfm
(2) World Wide Web page
Subterranea Britannica. 1998-2007. Royal Observer Corps-An online survey of the UK R.O.C and UK W.M.O Monitoring Posts, Subterranea Britannica http://www.subbrit.org.uk [Accessed 06-JUN-2007]
Further information about monuments may be obtained by contacting NMR Enquiry and Research Services , through the
English Heritage website.