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Berghaus, Hermann, 1892. Atlas de Geologie; Berghaus Physikalischer Atlas, Abteilung 1. Gotha: Justus Perthes, 7pp+ 15 double page maps. First edition. Justus Perthes.
Cope, JCW, Ingham, JK and Rawson, PF (eds) (1992). Atlas of Palaeogeography and Lithofacies [of British Isles], Geological Society Memoir no.13. Geological Society of London.
Maclure, William (1817). Observations on the Geology of the United States of America; A 1962 REPRODUCTION. Werner Fritsch.
Bayfield, Captain, R.N. (1837). ‘Note on the Geology of the North Coast of the St. Lawrence [Canada]’. Geological Society of London.