This is a real treasure: a free, searchable database of hundreds of thousands of Japanese woodcut prints, from many collections, spanning from the early 18th century to contemporary artists. It'll even do reverse image search and find alternate prints of the same woodcut.
A few favorites I browsed from the collection:
(Nishikawa Sukenobu, 1731)
(Katsushika Hokusai, 1830)
(Katsushika Hokusai, 1832)
(Hagiwara Hideo, 1950s)