The word "paper" comes from the Greek term for the ancient Egyptian writing material called papyrus, which was formed from beaten strips of papyrus plants. Papyrus was produced in Egypt as early as 3000 BC and was sold to ancient Greece and Rome. The establishment of the Library of Alexandria limited the supply of papyrus for others. According to the Roman historian Pliny the Elder ("Natural History" records, xiii.21), as a result of this, parchment was invented under the patronage of Eumenes II of Pergamon to build his rival library at Pergamon. However, this is a myth; parchment had been in use in Anatolia and elsewhere long before the rise of Pergamon.