For instance, the shift away from Ptolemy's world map, depicting the known world in 1492, to the maps produced in the 16th through 18th centuries reveal the leaps and bounds by which humanity's ...

A guide for Columbus Some of the maps came from the 1482 book "Cosmographia" and "Geographia" (1507), based on the work of Ptolemy. World maps by ... America in 1492. Eight maps were recovered ...