© Courtesy of the Institute of Chinese Studies, Library, Heidelberg University.
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楊椒山先生行書聯 Mr. Yang Jiaoshan s xing-styled couplets
李宗亮 Li Zongliang (Photographer), 楊椒山 Yang Jiangshan (Calligrapher),
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鄭良常先生篆書聯 Mr. Zheng Liangchang s zhuan-styled couplets
李宗亮 Li Zongliang (Photographer), 鄭良常 Zheng Liangchang (Painter),