Amongst the letters of the archive discovered at Nimrud in 1952 are a number referring to events on the northern and north-eastern frontiers of Assyria, principally during the reign of Sargon. Ten of these letters are here published: a few others exist which, though having references to the same area, are in too damaged a condition to be placed in a reasonably assured historico-geographical setting, and these it is proposed to incorporate in subsequent groups.