In Late Bronze Age Egypt, writing boards were covered with stucco and fabric and written on with ink. Only in Greco-Roman times were wax-covered boards introduced into Egypt. The literacy of other regions such as Canaan, the west coast of Anatolia (Arzawa) and Cyprus (Alashia) is evident from the Amarna Letters, the diplomatic correspondence between Near Eastern rulers and the Egyptian court in the 14th century B.C., but their archives have invariably not been located. As for Mycenaean Greece and Crete, Linear B tablets make no mention of wooden writing material. But a number of clay sealings have been found, which may have been used to seal more perishable writing materials.