Tosa Yamauchi Family Treasury and Archives
... that the Tosa Yamauchi Family Treasury and Archives contain the oldest extant manuscript of the Kokinshū, dating from the 11th century and designated a National Treasure of Japan?
... that the <b id="mwA3o"><a href="./Tosa_Yamauchi_Family_Treasury_and_Archives" id="mwA3s" rel="mw:WikiLink" title="Tosa Yamauchi Family Treasury and Archives">Tosa Yamauchi Family Treasury and Archives</a></b> contain the oldest extant manuscript of the <i id="mwA3w"><a class="mw-redirect" href="./Kokinshū" id="mwA30" rel="mw:WikiLink" title="Kokinshū">Kokinshū</a></i>, dating from the 11th century and designated a <a href="./List_of_National_Treasures_of_Japan_(writings:_Japanese_books)" id="mwA34" rel="mw:WikiLink" title="List of National Treasures of Japan (writings: Japanese books)">National Treasure of Japan</a>?