This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Carignano map th C.. Giovanni da Carignano of Genoa Date variously assigned but before It was undated but signed Presbiter Johannes Rector sancti Marci di portu Janue me fecit If the earlier dates are accepted before it may be the oldest known signed portolan chart This chart was long held by the Archivio di Stato in Florence Italy