1. The author has a list of surprising details in the book that are true. Given it is a novel this provides great insight and food for discussion. 2. She has also published a list of discussion questions that worked well for us. 3. Finally I printed out on quality glossy paper some of the referenced works in the book as well as one contemporary of theirs. I also included several the unfinished pieces of DaVinci. Finally, I discovered a sketch Michelangelo had done of DaVinci on his deathbed. Interesting as he died in France.