The Hittites lived mainly in the region of Turkey known as Anatolia. They wrote on various types of metal tablets, including lead, iron, and bronze. Many of their treaties with other peoples were written in the Akkadian language, which used a cuneiform script originally developed for use with clay tablets. Though Hittite was originally written in a hieroglyphic system (sometimes called Tabalic), the cuneiform system was also adopted. Most inscribed Hittite metal plates were used for official government business. However, in 1905, seven lead rolls were found in a private house in Assur and engraved in Hittite hieroglyphics dated to the end of the seventh century BC. They were private business letters written apparently by the owner of the house. They were not published until 1924. See O. R. Gurney, The Hittites (Baltimore: Penguin, 1966).