Keep Mum - She's Not so Dumb! - Careless Talk Costs Lives Frame:white During the 1930s Finsbury was

During the 1930s Finsbury was one of London's poorest boroughs

Field Marshal Sir Bernard Montgomery

image: two figures run forward toward the viewer

flying control officer

Keep Mum - She's Not so Dumb! - Careless Talk Costs Lives Frame:white During the 1930s Finsbury wasCreated in 1941 by Harold Forster, an artist noted for his illustrations on pre war Black Magic chocolate boxes, KeepMum Shes Not so Dumb is typical of Second World War British propaganda attempts to instil caution in the public through humorous,memorable slogans, rather than through fear inducing images of spies and saboteurs. Today, of course, this particular slogan appears ratherchauvinistic.