Sylvanus' map of part of Tunisia, Lybia, Sicily and Sardinia is one of the earliest obtainable maps of the region and the first printed in two colors.
The map appeared in Sylvanus' C laudii Ptholemaei Alexandrini liber Geographicae . . ., publish in Venice in 1511. The Sylvanus edition of Ptolemy is one of the earliest to include maps with modern geographical updates.