East Lilburn circular enclosure (Tillside) - Source of Reference
The information on this website is based on a range of published and unpublished works. Below is a list of the source of information used in writing this record.
(1) Aerial Photographs NU0323 A-J 1979 Mus Antiq Newcastle (T Gates)
(2) Aerial Photograph Google Earth, 14 July 2006 (info from T Gates 28 May 2008)
(3) This record includes National Record of the Historic Environment Information provided by Historic England on 4 January 2021 licensed under the Open Government Licence [http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/]
(3a) Gates, T., 1979. Aerial Archeology 4, 103
(3b) Aerial photographs (OS 72/386 213-4 10.9.72)