Quotations from Chairman Mao Tse-Tung. Peking: Foreign Language Press, 1969. 2nd vest pocket edition. These were sold at the North Gate and and other popular places throughout the Bay Area.
311 p – 14 cm
Political Manifesto

"It's an icon of China and communism as well as a work of propaganda. More than a billion copies have been published, making the book, often wrapped in its distinctive vinyl cover, one of the most widely produced of all time. During China's "Cultural Revolution" it became virtually mandatory to own and carry one."
"During the Cultural Revolution, in which millions were persecuted or killed, owning it "became a way of surviving", says Daniel Leese, professor of modern Chinese history and politics at the University of Freiburg. Paramilitary "Red Guards" mobilised by Mao to purify the Communist Party would check whether those suspected of bourgeois tendencies were carrying it or whether they could quote from it."
(https://www.bbc.com/news/magazine-34932800)