Note 22 — THE LEARDO MAP OF THE WORLD 1452 OR 1453
Reading edition
Like the Leardo map of 1452, the map of Walsperger, 1448, reveals Ptolemaic influence in some of its names although all the topographical features are strictly medieval. The Genoese world map of 1447 in its elliptical form is the result of a more serious attempt to reconcile the Ptolemaic geography with the traditional views. See Kretschmer, CE, pp. 76-77; on the Walsperger map, Kretschmer, Eine neue mittelalterliche Weltkarte der vatikanischen Bibliothek, in Zeitschr. Gesell. für Erdkunde zu Berlin, Vol. 26, 1891, pp. 371-406, reference on pp. 376-377. On the Genoese world map see the extended commentary of Fischer, op. cit., pp. 155-206.