Here’s a helpful tip that might help when you’re looking for a book. A quick stop at the Internet Archive can save you a trip to the library or money. It might even provide access to a book you can’t seem to track down.
I ended up ordering Thaumaturgos’ Paraphrase, but only after consulting it on the Internet Archive and recognizing its usefulness for my studies. You never know what you might be able to find. It’s even easier to search the holdings through openlibrary.org.
Feel free to comment with any useful books you come across.