Hart Heugh settlement and field system (Earle) - 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The information on this website is based on a range of published and unpublished works.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) Scheduled Monument Notification DCMS (IAM) AMs SM31717 15-FEB-1999
(2) 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/]
(2a) English Heritage, 1987. County list of Scheduled Ancient Monuments: December 1987, Northumberland, 17.
(2b) English Heritage List of Roman SAMs