Turret 41a on Hadrian's Wall (Haltwhistle) - 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The information on this website is based on a range of published and unpublished works.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) Birley, E., 1961. Research on Hadrian's Wall (Kendal), 71 and 74.
(3) Journal of Roman Studies 58 (1968), 179.
(4) Unpublished sources were used to c