From Cave Paintings to the Internet A Chronological and Thematic Database on the History of Information and Media Knowledge as Power: The Earliest Systematically Collected Library as Distinct from an Archive (668 BCE – 627 BCE)

In an effort to collect all knowledge, Ashurbanipal, King of Assyria during these years, collected a library at Nineveh, of 20,000–30,000 clay tablets written in cuneiform script. 

"Ashurbanipal was one of the few Assyrian kings to have been trained the scribal arts — by one Balasî , a senior royal scholar " (Robson, "The Clay Tablet Book," Eliot & Rose (eds) A Companion to the History of the Book [2007] 75).

"Recent cataloguing in the British Museum has enumerated some 3,700 scholarly tablets from Ashurbanipal's Library written in Babylonian script and Dialect — about 13 percent of the entire library. Ashurbanipal's obsession with Babylonian books did not, then, completely overwhelm indigenous production, but he did view them as highly valuable cultural capital; their forced removal to Nineveh undermined Babylonian claims to the intellectual heritage of the region and thus pretensions to political hegemony, while reinforcing Ashurbanipal's own self-image as guardian of Mesopotamian culture and power" (Robson, op. cit., 77).

The library was discovered at Nineveh by Austen Henry Layard in 1849, and is considered the earliest systematically collected library, as distinct from a government archive.  It is thought that a significant portion of the library survived to the present because the clay tablets were baked in fires set during the Median sack of Nineveh in 612 CE.

To deter thieves, Ashurbanipal had the following curse written on many of his tablets. It is the earliest known book curse:

“I have transcribed upon tablets the noble products of the work of the scribe which none of the kings who had gone before me had learned, together with the wisdom of Nabu insofar as it existeth [in writing]. I have arranged them in classes, I have revised them and I have placed them in my palace, that I, even I, the ruler who knoweth the light of Ashur, the king of the gods, may read them. Whosoever shall carry off this tablet, or shall inscribe his name on it, side by side with mine own, may Ashur and Belit overthrow him in wrath and anger, and may they destroy his name and posterity in the land" (Drogin, Anathema! [1983] 52-53).

The surviving portion of the library includes 660 cuneiform tablets that concern medicine. These were published in facsimile for the first time by Reginald C. Thompson as Assyrian Medical Texts. From the Originals in the British Museum (1923).