《汉书·传·外戚传下》
起初皇后的父亲许嘉从元帝时就被任命为大司马车骑将军辅佐朝政，已经有八九年了。
初，后父嘉自元帝时为大司马车骑将军辅政，已八九年矣。
Empress Xu's father, Xu Jia, had been appointed General of Chariots and Cavalry during Emperor Yuan's reign, and he had been assisting the administration for eight or nine years.