Make to Know is a book about art and creativity. Ostensibly, it is for "creative people," but I think it has something for all of us to consider.
The book begins with "What is the thing that we call a role-playing game?" Jon Peterson doesn't answer that question but he did document the first conversations of people attempting to.
Last week I finished reading Narrative Designer: Fabulator Ludus. It's an interesting book and I've been thinking hard about what to say about it. For regular readers of this blog, I recommend this book as a set of first principles to consider when you are designing material for your tabletop role-playing games. Stephen's book is intended to apply to a broad array of designed experiences of which tabletop role-playing games would be one. Much of what he has to say is in line with my own perspectives.