1998年中国华商纸币图说,许义宗教授著,硬皮本,附亲笔签名,图文并茂. Banknotes of the Commercial Banks of China 1898-1938, written by Professor Yih-Tzong Hsu, published in 1998, hardbound cover, with handsigned signature of the author, a valuable reference for Chinese banknotes collectors.