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In page Atlas:

"

The first work that contained systematically arranged maps of uniform size representing the first modern atlas was prepared by Italian cartographer Pietro Coppo in the early 16th century; however, it was not published at that time, so it is conventionally not considered the first atlas. Rather, that title is awarded to the collection of maps Theatrum Orbis Terrarum by the Brabantian cartographer Abraham Ortelius printed in 1570.[citation needed]