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...
Could you check the URL ? I think something broke during the copy and paste
You can download a full resolution pdf of the book at the original posts’s link, which is much better quality than the one on Wikimedia.
I used safari’s built in translate feature to translate the page from Japanese to English, scroll down for download options.