The following paper on the proliferation of literacy in 7th century BCE Judah as documented in the ostraka from the Judahite fortress of Arad (ca. 600 BCE) has just been published online before print in the "Proceedings of the National Academy of Sciences of the United States". http://www.pnas.org/content/early/2016/04/05/1522200113.full
(D.Tripaldi)