Mao Zedong's and Ling Biao's group first edition blk & white photo

This is a first edition group photo of Lin Biao and Mao Zedong. Lin Biao, as China's vice-Chairman, is ordered to be successor by Mao personally. But Lin Biao flied an aircraft on Sep 13.1971 after he rebelled and fled, then the plane crashed and he was dead. He betrayed Mao so Mao gave orders all over the country to destroy all Lin Biao's pictures, photos and books concerned. Under the political background then nobody dared to hide Lin's pictures intentionally. This photo has been preserved accidentally, which is really rare. The quantity of group photo of Lin and Mao preserved is extremely few. This photo is of greatly high value regardless of it as the collection and to the research of the Chinese Great Cultural Revolution. Which is the material collected by the newspaper office.