北京大學數字圖書館古文獻資源庫 http://rbdl.calis.edu.cn/pages/Search.htm
中國碑帖拓片網 http://www.gjj.cc/url/3603.htm
Chinese Stone Rubbings Collection, East Asian Library, University of California, Berkeley http://www.lib.berkeley.edu/EAL/stone/search.html