Wrigley's - War EffortOriginal rare World War Two poster advertising Wrigley's Spearmint Chewing Gum. Artwork by the American poster designer, Otis Shepard (1893 1969; Wrigley's Art Director 1932 1962). "Millions working for victory have found chewing gum is a real help on the job. The makers of Wrigley's Spearmint Gum are trying hard to supply everybody so please buy only what you need and chew each stick longer. The flavor lasts!" Horizontal. Good condition, restored