Rocket Propaganda from WWII

http://www.germanpostalhistory.com/php/searchviewpage.php?country_spec=Mailsales.mailsale153&pageitems=300&pagenum=0&orderby=3
This is a really interesting, and apparently quite rare, collection of V-1 delivered propaganda flyers.  I had no idea that it was used for such purposes.

(Thanks for the link, John!)