《明史·列传·卷三十七》
永乐元年命原吉前往治理，不久又命侍郎李文郁做他的副手，派佥都御史俞士吉带水利书籍赐给他。
永乐元年，命原吉治之。寻命侍郎李文郁为之副，复使佥都御史俞士吉赍水利书赐之。
In the first year of the Yongle era, the emperor ordered Yuan Ji to manage it, and soon ordered Li Wenyu, a servant, to assist him, and sent Inspector Yu Shiji to give him books on water conservancy.