From Gerard Mercator’s edition of ‘Claudii Ptolemaei Tabulae Geographicae Orbis Terrarum’. It was in 1578 that one of the world’s greatest cartographers put out an edition of the earliest surviving geographical treatise. Ptolemy’s representation of the Iberian peninsula including Spain and Portugal as seen through the eyes of Mercator. “Cartografia Impressa dos Seculos XVI e XVII” pp. 48-9; Koeman Me 5; Nordenskiold 234; Phillips, P.L. (Atlases) 384; Shirley BL T.Ptol-11a & 11k; Van der Krogt, P. (Atlantes) 1:501.