Cultivation terraces (Birtley) - 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The information on this website is based on a range of published and unpublished works.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) Ordnance Survey Map OS 6 inch 1925
(2) Hall, G.R., 1865. Archaeologia Aeliana (2nd Series) 5, 149.
(3) Field Investigators Comments F1 WDJ 16-JAN-1962