位于山东聊城的杨氏海源阁是我国清末北方的私家藏书中心。时与江苏常熟程氏铁琴铜剑楼、浙江钱塘丁氏八千卷楼、浙江归安陆氏阻宋楼合称清末四大藏书搂。海源阁因所藏宋元刻本与钞本同程氏铁琴铜剑楼齐名；又因至民国初眼宋楼书藏流落日本，八千卷楼书藏归入金陵江南图书馆， Located in Liaocheng, Shandong Yang Haiyuan Court is a private collection center in northern China in the late Qing Dynasty. At the same time, Changshu, Jiangsu Province, Cheng Gilt bronze sword floor, Zhejiang Qiantang Ding eight thousand volumes, Zhejiang Ann Lu Blocked Song Building, collectively known as the late Qing Dynasty four books hug. Haiyuan Court because of the collection of the Song and Yuan Dynasties with the same copy of the Cheng Tong Glockenspiel bronze sword floor; also because of the Republic of China Song Dynasty House opened in early fall, eight volumes of bookstore included in Jinling Jiangnan Library,