Kussara is occasionally mentioned (as Ku-ša-ra) in the clay tablets of the Old Assyrian traders in Anatolia, and less often in the early Hittite Kingdom (as KUR URU Ku-uš-ša-ra).
Hittite sources have little to offer on the context of Kussara, and since the city disappears out of political history at a very early date when?
Massimo Forlanini, an expert in the geography of ancient Anatolia, has stated that Kussara was probably situated southeast of Kanesh, but presumably north of Luhuzzadia/Lahu(wa)zzandiya, between Hurama and Tegarama (modern day Gürün), perhaps on a road which was crossing another road to the north in the direction of Samuha.
Professor Trevor Bryce wrote "[t]he city of Kussara probably lay to the south-east of the Kizil Irmak basin in the anti-Taurus region, on or near one of the main trade routes from Assyria and perhaps in the vicinity of modern Şar (Comana Cappadocia)".
Craig Melchert concluded in the chapter "Prehistory" of his book The Luwians (2003–17): "Hittite core vocabulary remains Indo-European".
The Anitta Text records that when Pithana captured Kanesh, he did no harm to it, but made the inhabitants "his mothers and fathers."