In the "Yoshufu-shi" (a geographical description of Yamashiro province) there is a description bout 'Kaga hosho (heavy Japanese paper made in Kaga province) and Echizen torinoko as being the best paper,' and in the "Wakansansaizue" there is a description of torinoko of Fuchu in Echizen Province; 'the surface of the paper is smooth and easy to write on, is firm enough to endure long storage, this could be called the king of paper.'
『雍州府志（ようしゅうふし）』には、「およそ　加賀奉書　越前鳥の子、是を以て紙の最となす」とあり、『和漢三才図絵』には、越前府中の鳥の子は、「紙肌滑らかにして書きやすく、性堅くして久しきに耐え、紙王というべきか」とある。