Google Books public domain book curiosities

Hey clue club, any Harvard or Boston area librarians want to solve the what the heck is this mystery alluded to on this blog post? It looks like a handwritten version of the poem printed in the book, but without page numbers or any other indication that it’s part of the book. Table of Contents is mum on what’s going on. Anyone know, or want to go check out the book at Harvard and see? [thanks chase]