JF Ptak Science Books Quick Post
I recovered this sample Air Raid Precaution poster from a box of WWII material, received by the Library of Congress on the very day that many historians declare to be the very end of the Blitz. Of course the poster was printed earlier, collected in this case by the OSS and put in a folder and then sent off to the Library of Congress.
It is a remarkably level-headed document, clear and concise, very stiff-upper-lip. And these posters were very necessary, as we can see by the map following:
This incredible story (centered on Westminster) is a detail from an incredible (and interactive) map showing every bombed dropped by the Germans on London during the Blitz 7th October 1940 to 6th June 1941 [Source: http://bombsight.org/?#14/51.5005/-0.1281]
The following are instructional newsreels (all found on youtube) about what to do in an air raid (1940), while the second demonstrates the sounds of the air raid sirens discussed in the document above, and the third is a short history of the Blitz: