A Historic Cartographer is the name given to the very few of us in the industry that specializes in the creation of researched maps that represent a specific location at a particular point in time (mine specialization being 15th through 18th centuries). The term "Portolan" is used to identify hand-made maps that are observed as having a specific set of characteristics used by early Cartographers (Cartouche, Scale, Windrose, Rhumblines, and Misc uses of Hand-Created Art in the Map itself). A "Portolan Artist" is someone who follows the same design principles and technique as early Cartographers.