Harris, A.L. (ed), (1985). ‘[Map of] Caledonian Igneous Rocks of Britain and Ireland’ in  The Nature and Timing of Orogenic Activity in the Caledonian Rocks of the British Isles; Memoir No. 9. London: Blackwell for the Geological Society, 1^st. 53 pp. Folded colour lithographed map 1:2,000,000 scale, 84 x 59.5. And, folded colour lithographed map at same size and scale ‘[Map of] Grade and Time of Metamorphism in the Caledonide Orogen of Britain and Ireland, and ‘[Map of] Time of Deformation in the Caledonide Orogen of Britain and Ireland’, 1:1:1,000,000, 112 x 80cm. All maps as new, text clean, in front and rear folded pockets of staple bound paper-covered A4 report in very good condition.