《明史·本纪·卷十四》
二十二日，太监张善监督军务，定西侯蒋琬充任总兵官，同总督尚书余子俊防备大同、宣府。
己酉，太监张善监督军务，定西侯蒋琬充总兵官，同总督尚书余子俊备大同、宣府。
On the 22nd, Eunuch Zhang Shan supervised military affairs, and Dingxi Marquis Jiang Wan acted as the commander-in-chief. He guarded Datong and Xuanfu together with Governor Shangshu Yu Zijun.