The El Amarna letters , written in cuneiform , refer frequently to Hatti .
The Egyptian documents that mention the eponymous Hatti region of the Hittites are the war annals of Thutmoses III and of Seti and Ramses II .
The El Amarna letters , written in cuneiform , refer frequently to Hatti .
The Egyptian documents that mention the eponymous Hatti region of the Hittites are the war annals of Thutmoses III and of Seti and Ramses II .