Public domain
(Chogoro and Chokichi Sumo Picture)
From the collection of National Diet Library, Japan. Free to download, adapt and use — no permission needed.
Credit line（長五郎長吉相撲図）. 一勇斎国芳. National Diet Library, Japan. Public domain.
From the collection of National Diet Library, Japan. Free to download, adapt and use — no permission needed.
