《后汉书·列传·循吏列传》
永元十五年，王涣跟随皇上到南方巡视，回来后担任洛阳令。
永元十五年，从驾南巡，还为洛阳令。
In the fifteenth year of Yongyuan, Wang Huan followed the Emperor on a tour of the south. After returning, he was appointed as the Chief Magistrate of Luoyang.