Years ago, a panelist at an academic seminar I attended, in response to a question I asked, recommended a book called "The Memory Palace of Matteo Ricci" by Jonathan D. Spence. It was an academic study of Jesuit missionaries in China in the 16th and 17th centuries. Each chapter of this book is focused around a specific image as expressed by a Chinese character. For me this was a confirmation that you could organize a book around images. Spence didn't actually do this the way I planned to, but his book was still a great support. Both my solo-authored books (I've also written five collaborations) are organized around a central image.