鲁西聊城杨氏海源阁藏书楼，为清末著名四大私人藏书楼之一。其鼎盛时期，曾使“孤本珍籍，精抄名校，悉集于聊城”，其残存藏书，亦早已成为历史文化瑰宝。 海源阁的四代主人 海源阁藏书楼，始于杨以增，止于杨承训，前后经历了四代主人，其中又以杨以增及其子杨绍和贡献最大 Lusi Liaocheng Yang’s Haiyuan Pavilion Library, one of the four famous private library in the late Qing Dynasty. In its heyday, once “rare books, refined prestigious schools, learned gathered in Liaocheng”, the remaining collection of books, has long been a historical and cultural gems. Haiyuan Court, the fourth generation of the source cabinet Haiyuan Court, began in Yang Zengzeng, stop at Yang Chengxun, before and after experiencing four generations of masters, of which Yang Yi Zeng and his son Yang Shaohe contributed the most