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Get Angels in the Architecture from the Canon shelf: https://canonpress.com/products/angels-in-the-architecture/

Also check out Dr. Michael Ward's Planet Narnia: https://www.amazon.com/Planet-Narnia-Seven-Heavens-Imagination/dp/019973870X/ref=tmm_pap_title_0?_encoding=UTF8&qid=1606175491&sr=8-2