Oh, my!!   Hutchison? *lol*

"Fodder for the conspiracy theorists, fueled by Hutchison’s incendiary allegations and characterizations"
https://www.kirkusreviews.com/book-reviews/robert-hutchison/their-kingdom-come/

"Given the superficiality of the research, the narrative's fixation on conspiracy theories, and the absurdity of many of the allegations, it is clear that this is not a book to be taken as a reliable work of reference."
http://www.todosloslibros.info/index.php/respuestas/39-their-kingdom-come

I think I'd try for a different reference to attempt to support your position....