PNP367293 Mao Zedong writing his \'On Protracted War\' in a cave-dwelling in Yenan / Yan\'an, 1938 (photo) by Chinese Photographer, (20th Century); Private Collection; (add.info.: Mao Tse-tung (1893-1976) leader of the People\'s Republic on China from its establishment in 1949 until his death; A yaodong or house cave is an earth shelter welling; generally carved out of a hillside, common in China\'s north. The most famous yaodongs in China are perhaps those in Yan\'an. The communists led by Mao Zedong headquartered there in 1935–1948 and lived in yaodongs. Edgar Snow visited Mao and his party in Yan\'an and wrote Red Star Over China.); Peter Newark Historical Pictures; Chinese, out of copyright.