The rhyme sometimes appears as part of a larger work called What Folks Are Made Of or What All the World Is Made Of. According to Iona and Peter Opie, this first appears in a manuscript by the English poet Robert Southey (1774–1843) - according to Wikipedia.
Either way this thing is perfect for the little guy and chock full of nuts, chocolate treats, soft baby blanket, a cigar novelty writing pen and so much more!