  7. Maimonides, “Letter to Yemen”   The last known translation by Ibn Tibbon is Maimonides’ “Letter to Yemen.” This text he seems to have acquired while in Egypt; and he translated it into Hebrew circa 1214. Why he translated this text is not known. But it seems that it did not circulate widely. Thus already in the 1230s Abraham ibn Hasdai found it necessary to produce a fresh translation of the work, since he could not find a copy of the rendering by his predecessor.