Six works of art at a Dutch national museum may have been created by famed ukiyo-e artist Katsushika Hokusai, a researcher at the museum says.

Five of the Edo Period artworks are paintings that used Western-style watercolor techniques and are believed to have been influenced by German physician Philipp Franz von Siebold (1796-1866), whom Hokusai (1760-1849) was acquainted with, according to the Museum Volkenkunde in Leiden.

The remaining artwork is a woodblock print of Edo, now known as Tokyo.