The library of King Assurbanipal, also known as the Library of Nineveh, contained thousands of clay tablets inscribed with cuneiform script. These tablets contained a wide range of texts, including literature, laws, and scientific works. The exact number of tablets discovered in the library is not clear, but it is estimated to have been around 30,000 tablets. The library was a major achievement in the field of archaeology and a valuable resource for scholars studying the ancient Near East. The tablets have provided valuable insights into the history, culture, and daily life of the ancient Mesopotamians, and have helped to shed light on the development of writing and literature in the ancient world.