《明史·列传·卷一百三十六》
登莱巡抚孙元化长期在辽阳做官，一向以为辽阳人可以任用，于是起用毛承禄为副将，孔有德、耿仲明担任游击，李九成为偏裨，而且大量接收辽人为帐前卫兵。
登莱巡抚孙元化官辽久，素言辽人可用，乃用承禄为副将，有德、仲明为游击，九成为偏裨，且多收辽人为牙兵。
Denglai Patrol Envoy Sun Yuanhua had been an official in Liaoyang for a long time. He always believed that Liaoning people were employable. So he appointed Mao Chenglu as deputy general, Kong Youde and Geng Zhongming as guerrillas, and Li Jiucheng as aide-de-camps, and also recruited a large number of Liaoning people as guards in front of his tent.