《明史·本纪·卷七》
二月十八日，隆平侯张信、兵部尚书李庆分别督运北征军饷，役使民夫二十三万五千余人，运粮饷三十七万石。
二月乙巳，隆平侯张信、兵部尚书李庆分督北征军饷，役民夫二十三万五千有奇，运粮三十七万石。
On February 18th, the Marquis of Longping, Zhang Xin, and Li Qing, the Minister of War, supervised the transportation of military supplies for the Northern Expedition, using more than 235,000 peasants to transport 370,000 stone of grain and military supplies.