《资治通鉴·后晋纪·后晋纪四》
契丹主耶律德光屯驻元城，赵延寿屯驻南乐，契丹任命赵延寿为魏博节度使，封爵魏王。
契丹主屯元城，赵延寿屯南乐；以延寿为魏博节度使，封魏王。
Khitan ruler Yelü Deguang stationed his troops in Yuancheng, Zhao Yanshou in Nanle; the Khitans appointed Zhao Yanshou as Weibo Circuit Commander, and bestowed the title of Duke of Wei upon him.