《宋史·列传·卷五十四》
太宗皇帝始修造三馆，另在升龙门左边建立秘阁，亲自为它用飞白体书写匾额，又写作赞文刻在秘阁下的石上。
太宗皇帝肇修三馆，更立秘阁于升龙门左，亲为飞白书额，作赞刻石阁下。
Emperor Taizong first built the three libraries, and also built a secret library to the left of Shenglongmen; he personally wrote the plaque for it in flying white script, and also wrote a eulogy that was engraved on a stone under the secret library.