The firm of Van Keulen was founded around 1678 by Johannes van Keulen (1654-1715) and in 1680 he published the ‘Zee Atlas’. The multi volume ‘Zee Fakkel’ followed soon after. On his 50th birthday he left the management of the firm to his talented son Gerard (1678-1726). The map focuses on the waters between Calabria in Italy and the west coast of Greece. A portion of Sicily is depicted on the left with Cefalonia lower right. Most of Morea is shown with above it the islands of Zante leading north to Corfu. Two insets in the upper corners focus on the Harbour of Cephalonia, the island of Zante with another small one of Porto de Prodino. This example is from the third part of ‘De Nieuwe Groote Lichtende Zee-Fakkel’ dated 1724 which covered the Mediterranean Sea. De Vries, Schilder etc. ‘The Van Keulen Cartography Amsterdam 1680-1885’, pp. 44 & 202-5; Koeman IV p. 377 no. 109 st. 2; Koeman ‘The Sea on Paper’ p. 37-8 no. 12.