In fact, P75 has just been donated to the Holy See as a gift. It is a papyrus codex–yep, a book–which has been dated to around 175AD and is in fact the oldes extant copy of parts of the Gospels of Luke and John. But here is the really cool part: there is one page on which the gospel of Luke ends and the Gospel of John begins.
So what? you say–that’s how it is in every bible on my bookshelf. Exactly. Think about it. 150 years before the Council of Nicea, at which folk like Dan Brown would have you believe that the bishops sifted through 300 gospels and chose the ones that suited their tastes, there was a clear canon of scripture in which the Gospel according to St Luke WAS DIRECTLY FOLLOWED by the Gospel of St John.
As they say in the classics, put that in your pipe and smoke it.