This elegant publication (Athens 2019) features select papers presented at the 3rd International Conference of the Sylvia Ioannou Foundation, entitled ‘Knowledge is Power’ (Cartography Sessions), held in collaboration with the University of Cyprus (Nicosia, November 2016). The essays annotate three – until now unpublished – distinct manuscripts dating to the 17th and 18th centuries from the Foundation’s Collection: an atlas from the famous cartographic workshop of Giovanni Battista Cavallini (Livorno 1635); a large-scale map of the Mediterranean by an anonymous Ottoman cartographer (17th or 18th century); and an extremely interesting experiential mapping of 18th-century Cyprus.