The very first image in this thread was from Cornelius Cardew's epic "Treatise": a score consisting of 193 pages of beautiful compositions. The one at the top of the thread is from page 183. Later I also posted pages 29, 134 and two other images, which I am not certain of page numbers. I only have 25 images from the set, and continue searching for more. I would love to have a book with the whole score, but have never found one (if you have recommendation for a book that has the complete set in it, please let me know).
I think "Treatise" score is really among the most amazing examples of experimental music notation, and even though (or maybe even because) Cardew eventually "disowned" it, I find it inspiring and historically important.
So, I will continue adding pages from "Treatise" here, as we continue expanding the collection. Here are a few more. Pages 131, 133, and 137: