Public domain
Nyudo Udaijin Shu: Sonkeikaku Zankan
From the collection of National Diet Library, Japan. Free to download, adapt and use — no permission needed.
Credit line入道右大臣集 : 尊経閣叢刊. 昭和18. 藤原, 頼宗, 993-1065. National Diet Library, Japan. Public domain.
