Found a copy of the book on Wikimedia. It was originaly published as a pattern book for kimono textile, then rediscovered in 1986 in a collection at the Boston Museum. Since then art historians in Japan found further prints.

北斎模様画譜 (1884) - Hokusai Pattern Book - https://commons.wikimedia.org/w/index.php?title=File%3ANDL85...