Muratorian Canon (~180)
nEarly list of books in NT; fragmentary at beginning & end.
n“…but he was present among them, and so he put.  The third book of the Gospel is that acc to Luke.  Luke, the physician, after the ascension of Christ, when Paul had taken him with him as a companion of his traveling, an investigation, wrote in his own name — but neither did he see the Lord in the flesh — and thus, as he was able to investigate, so also he begins to tell the story from the nativity of John.”