https://www.panmacmillan.com/blogs/literary/maps-graham-robb-debatable-land
Download these high resolution versions of the maps which feature in Graham Robb's The Debatable Land: The Lost World Between England and Scotland.
graham robbdebatable landpan macmillanmaps
https://www.bas.ac.uk/data/our-data/publication/implications-of-sm-nd-garnet-ages-for-the-stratigraphy-of-northern/
implicationssmndgarnetages