Keywords: Go-Saga letter.jpg National Treasure of Japan in the category ancient documents http //www kyohaku go jp/eng/tenji/chinretsu/sinkan/s2 html Kyoto National Museum Emperor Go-Saga 1246-04-15 PD-old-100 Japanese calligraphy in the Kamakura period Emperor Go-Saga Ninnaji Scrolls of Japan Manuscript letters written messages National Treasures of Japan ancient documents |