Just in case you missed it, the implication is that yes, there is now a full copy of What is Self Defense (the 1953 version, not the 1981 version that bears this cover) available here at the site. Thankfully, it appears to have fallen into the public domain.
I’m actually not the hugest fan ever of this book, and upon close inspection it’s plagiarized, filled with bad body mechanics, and overly revered, but I do think it is required reading for kenpo / kempo students. The point is that it is the only real view we have into the curriculum of James Mitose. Read and enjoy!