In June 1258, it is said that Sanetoki HOJO lent the original Kawachibon owned by MINAMOTO no Chikayuki right after it had been completed, had a writer copy it, and put it in Kanesawa bunko.
5月に北条実時が出来上がったばかりの源親行所有の河内本原本を借用して能筆家に書写させ金沢文庫に入れたものとされている。