Books Are People, Too:
This is the rarest of Brautigan’s books. Four are currently listed on ABE, ranging from $395 (for an incomplete set) to $1,250.
Richard Brautigan published Please Plant This Book in the Spring of 1968. It consisted of eight packets of garden seeds, each printed with a poem, all gathered in a small folder.
Here is a digital version of Please Plant This Book, typographical errors and all. Seeds not included.
more info at the Brautigan Bibliography and Archive