South Site, Cave 2, 2-67 Niche, Right, 'Da Zhou, the Second Year of Shengli, Gao Chongzi made a Guanyin Image for Reng Xin'
南响堂第二窟2-67龛右侧“大周圣历二年高冲子为任行造观音像”
South Site | Cave 2
Tang (618-907) | Dedicatory Text
Volume 2 Figure 31 in book Xiangtangshan shiku beike tiji zonglu by Zhang Lintang and Xu Peilan
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