Poem of the Pillow and Other Stories By Utamaro, Hokusai, Kuniyoshi, and Other Artists of the Floating World is a 384 page book published by Phaidon Press. It is a comprehensive modern study on Japanese erotic art put together by Gian Carlo Calza who is Professor of East Asian Art History and Director of the International Hokusai Research Centre at the University of Venice.
Here is a little bit of what The Nymphomaniac Ness has to say about Poem of the Pillow and other stories:
“Overall, this is a very beautiful collect of Shunga style erotica. Even though there isn’t much written information in this book there is enough that you are able to get a general understanding of Shunga art. It’s also very interesting to see how sex positions and sex toys developed over 1568-1868.”