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Building the Shangyou Hydropower Plant in 1957
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by Covell Meyskens
Mao with Ke Qingshi. Source
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惠孝同, 秦仲文, 胡佩衡, 吴镜汀 Source
Shandong's General Secretary Shu Tong is second to the right. Source
The photos are from a Japanese book. 日文版的“岩波写真文库221”——《北京》,刊载了200余幅56~57年冬季的北京的照片 Source