The second engraver of the library of congress mystery map

Abstract

ABSTRACT The Library of Congress has a map that they credit to Gerald Mercator and André Thevet with a creation date of 1569. Visual inspection suggests that this map had two engravers. One was the original cartographer who engraved the whole map placing toponyms where appropriate. Later, the second engraver added about five dozen toponyms. This paper identifies these two engravers and suggests the dates in which they did their work.