https://www.pbs.org/wgbh/pages/frontline/shows/religion/story/qthomas.html
This is from PBS: "More About Q and the Gospel of Thomas
An accidental discovery in Egypt seems to confirm the existence of the 'lost' gospel of Q."
The "discovery" mentioned above is the 1945 discovery of the Nag Hammadi codices, Gnostic manuscripts that discuss Archons.