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In the introduction to the appendix of modern maps by Martin Waldseemüller in the famous Strasbourg Ptolemy atlas of 1513 is a “puzzling sentence” that mentions a so-called “Admiral’s Map.” During the nineteenth century, historians struggled to understand what map was the Admiral’s, who the Admiral was, and how this Admiral’s Map related to the maps made by Waldseemüller. Since then, most who have looked at the question of the Admiral’s Map have merely repeated the tentative conclusions made in the nineteenth century. With the benefit of the recovery of important cartographic works since that time, we can now make a more definitive conclusion: the Admiral’s Map was the Caverio planisphere (c. 1506).

Revisiting the “Admiral’s Map”: What Was It? And Who Was He?