The story of 'Keep Calm and Carry On'.

[Mi Amigo]

... in case you ever wondered ...

http://www.wimp.com/keepcalm/

[the lynx]

... in case you ever wondered ...

http://www.wimp.com/keepcalm/

+1

[JR8]

I knew the background to the poster (and it's modern imitation), but not that it remained undiscovered for so long.

I also recall an episode of Antiques Roadshow a couple of years back, when a visitor brought in his collection of maybe 1-200 ('Aye, I've kept it under me bed all these year') WW2 posters, including certainly 5 copies of this 'KKACO' poster, all in mint/unused condition. I recall the valuer almost passing out at that point... a 'just wow' moment...

[heliotropic365]

cool!

and beware the military industrial complex.

[zzm9980]

... in case you ever wondered ...

http://www.wimp.com/keepcalm/

I assumed its origin was very well known by most of those using it, save the occasional 13yr old girl. It is a cool video though.