The Monography Series of papers written by Donald W. Watson from 2000 – 2003 are all about yo-yo physics. Initially published by Pencil Point Press, they’re an amazing read that covers a wide range of topics.
All five papers are available to download and read below:
I love that Mr. Watson did this all by hand. In today’s time of computers and AI, it is amazing to see the diligent work and passion that this gentleman had.