谨防猫头绳缠乱绳断打人 Jinfang maotou shengchan luansheng duan da ren Designer Sichuan Petroleum Administration Bureau of Drilling (四川石油管理总局钻探局) Date early 1950s Publisher First Printing Factory of the Northwest Military Region (西北軍區第一印刷廠) Size 78x54 cm. Call nr. BG E37/279 Collection Landsberger collection