《汉书·传·萧望之传》
等到宣帝卧病在床，选择可以托付后事的大臣，召外戚侍中乐陵侯史高、太子太傅萧望之、少傅周堪到宫中，封史高为大司马车骑将军，萧望之为前将军光禄勋，周堪为光禄大夫，都接受遣韶辅政，领尚书事。
及宣帝寝疾，选大臣可属者，引外属侍中乐陵侯史高、太子太傅望之、少傅周堪至禁中，拜高为大司马车骑将军，望之为前将军光禄勋，堪为光禄大夫，皆受遗诏辅政，领尚书事。
When Emperor Xuan was confined to bed, he planned to choose ministers to act as his regents. He summoned the imperial relative and assistant in-waiting, Marquis of Leling, Shi Gao; the junior tutor to the crown prince Xiao Wangzhi; and the junior assistant tutor Zhou Kan to the palace. He gave the marquis the post of Grand Coachman-Cavalry General, made Xiao Wangzhi General of the Vanguard and Minister of the Palace Gentlemen, and made Zhou Kan Minister of the Palace Gentlemen so that all would command imperial decrees to support the government and supervise the imperial secretariat.