Grotto by the Hart Burn (Hartburn) - 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The information on this website is based on a range of published and unpublished works.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) RCHME Data Exchange 1997 (NMR No: NZ 08 NE 18)
2) List of Buildings of Special Architectural or Historic Interest, Castle Morpeth: Hartburn 30-Jan-1986 (16)
3) Tyne and Tweed 44 1989 92-6 (J Brown and C Hudson)
4) Wallis, J, 1769. Antiquities of Northumberland (p526)
5) Mackenzie, E, 1825. View of the County of Northumberland, vol 2 (p158)
6) Hodgson, J, 1827. History of Northumberland (p301)