The original slogan "Keep Calm and Carry On" was introduced on a poster produced by the British government just as World War 2 was set to begin, in the year 1939. Though it was little known and never actually used, it was originally intended to "raise the morale of the British public under threat of impending invasion" (via wikipedia). After being rediscovered in the year 2000, the posters can be seen in a variety of places, including an ad campaign by British clothing store Jigsaw London. In my AP United States History class (APUSH), we are approaching the unit discussing the Second World War, so I thought it was only appropriate to extend my research into something a bit more interesting than the Allies and Axis Powers.
How could I not include this one, too?!