Turret 18b (Matfen) - 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The information on this website is based on a range of published and unpublished works.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.
(2) Further information about the protected nature of this site can be found here.
(3) Birley, E., Brewis, P. and Simpson, F.G. 1932. Archaeologia Aeliana (4th Series) 9, 257-8