Cyperus Papyrus
The paper reeds, aroth, were the papyrus, much of which grew in the Nile, and of which paper was made. Some of such paper has been found in the tombs of Egypt, but it is very fragile (Isa. 19:7). The paper, χάρτης, in 2 John 1:1,12 is supposed to be the same.
Dead Sea Scroll: A page from Matthew, from Papyrus 1, c. 250 AD