**Claudius Ptolemaeus & Gerard
Mercator. ***Tabulae Geographicae*. Cologne: Gottfried von Kempen, 1578.

*Hand-colored engravings.*

Flemish
cartographer Gerard Mercator (1512-1594) engraved the 27 maps in this atlas
after the influential work of Greek geographer Ptolemy (ca. 84-165). Well versed in mathematics, Mercator innovated
the rendering of map parallels and meridians as straight lines spaced to
produce an accurate ratio of latitude to longitude at any point, and a result,
his maps were much more useful as tools of navigation.

**Link: **More about Claudius Ptolemy.