《明史·志·卷五十三》
李继贞巡抚天津，也致力于屯田事务，然而遭遇旱灾和蝗灾，不能见到成效。
李继贞巡抚天津，亦力於屯务，然仍岁旱蝗，弗克底成效也。
Li Jizhen, the governor of Tianjin, also focused on military reclamation, but due to droughts and locust disasters, he failed to achieve any results.