[JGT]

I have found some of his writings here: https://www.orthodoxartsjournal.org/author/jonathan-pageau/

Unfortunately most of his work appears via video. His brother, Matthieu Pageau, is currently writing a book on traditional Christian symbology. I'm not sure of the release date.

[Mrs. Don-o]

Thanks for that info. Very kind of you to look it up for me.