As Ono says in the book's introduction, “It’s nearly 50 years ago that my book of conceptual instructions, Grapefruit, was first published. Some years ago, I picked up from where I left off, and wrote Acorn for a website event. Now it's being published in book form. I'm riding a time machine that's going back to the old ways! Great! I added my dot drawing to give you further brainwork. I’m just planting the seeds. Have fun.”
The book is in like new condition.