比思想,发扬共产主义精神! Bi sixiang, fayang gongchan zhuyi jingshen! Designer Ha Qiongwen (哈琼文) Date 1958, August Publisher Shanghai renmin meishu chubanshe (上海人民美术出版社) Size 77x53 cm. Call nr. BG E40/43 Collection IISH collection Theme Ideological Foundations Link to IISH catalog https://search.iisg.amsterdam/Record/1290375