Keep Mum She's not so Dumb Poster Keep Mum She's not so Dumb Poster

Created in 1941, Keep Mum She’s Not so Dumb, is typical of Second World War British propaganda attempts to instill caution in the public through humorous, memorable slogans, rather than through fear-inducing images of spies and saboteurs.

Poster reads: Keep Mum she’s not so dumb! Careless talk costs lives

Produced during the Second World War

© IWM (Art.IWM PST 4095)

Keep Mum She's not so Dumb Poster Keep Mum She's not so Dumb Poster

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Keep Mum She's not so Dumb Poster PP00298

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