Hepburn Crag millstone quarry (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The information on this website is based on a range of published and unpublished works.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) Lancaster University Archaeological Unit and Northern Counties Archaeological Services, 2000. Harbottle Hill Millstone Quarry, Northumberland, 30. This is an unpublished report. Further information can be obtained from here.