Ortelius's "Theater of the Whole World" is considered the first modern geographical atlas and was first published on May 20, 1570. It proved to be so popular that a second edition appeared later that year. Ortelius compiled and edited the work, gathering together the best maps that he could find, and had them re-engraved in uniform size, listing all of the contributors to the volume. Most of the engraving work was executed by Franz Hogenberg (fl. 1558 - 1590).