 One of the oldest libraries found is that of the ancient library at Ebla (circa 2500 BCE) in present-day Syria.In the 1970s, the excavation at Ebla's library unearthed over 20,000 clay tablets written in cuneiform script.The Al Qarawiyyin Library was founded in 859 by Fatima al-Fihri and is the oldest working library in the world.