CHUNG Ling Soo (William E. Robinson, 1861 ? 1918). Chung Ling Soo. Birmingham: J. Upton Ltd. Lith., ca. 1915. Horizontal half-sheet lithograph shows Soo, seated between two giant flags, with vignette bust portraits of his parents in the upper corners of the poster. 20 1/8 x 30?. Faint discoloration and restoration below Soo?s robe, one closed tear. A-. Linen backed.Both of Soo?s parents were of Scottish descent, though this poster depicts his mother as Chinese in an attempt ? perhaps tongue-in-cheek ? to maintain the story that he had Chinese ancestors.