Bibliographical sources mentioned in this text:
Cœnalis, Robert : Bk.2 De Re Gallica 21.8, 21.20, 21.25e
Cambrensis, Giraldus : Itinerary 21.25a
Leland, Iohn : Genethliacon 21.11, 21.12, 21.25a, 21.25d
Lhoyd, Humfrey : mentioned as the maker of this map in cartouche Ort21
21.22, 21.25a;
De Mona Druidum 21.2, 21.7, 21.11
Monmouth, Ieffrey of (= Galfridus Monumenthensis) 21.10, 21.27
Polydorus : History of England 21.20, 21.25b, 21.25e
Ptolemæus is mentioned twice on the map itself
Sylvester Gyraldus 21.8
Tacitus 21.7, 21.25 : Bk.14 Annales 21.12, 21.25c
Vergilius, Polydorus 21.8, 21.11, 21.25b, 21.25e
William of Newberry : Bk.2, ch.5 21.8