This Mao's Philosophy Red Book was an excerpt of Mao's Communist essays, total of five of his essays were included in this red book, published by People's Publishing house, distributed by Xi Hua Bookstore, and printed by No. 1 Tian Jin printing company in October, 1970, this book was priced at 37 Chinese cents at the time. As evidenced by the stamp and the clean handwriting, this book was given to a woman by the name of Lin Yan Ping, by the Revolution committee of Beijing Xuan Wu District, Guang Wai Sand Paper Company on August 1, 1971. Size: 5" L by 3.75" W. This book was wide studied by all recipients, as evident by the underlinings down in this book. During Cultural Revolution, classes were held to study Mao's theory.