Keep Mum Poster

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This British World War II propaganda poster was intended to warn servicemen about speaking too freely with civilians who might actually be spies. Using a rhyming, somewhat humorous message Keep mum, shes not so dumb with the subhead Careless talk costs lives was believed to be more memorable and effective than fear-mongering. The Americans used the same tactic with Loose lips sink ships. This reproduction is perfect for framing and hanging wherever secrets should be kept.