A great German web site for us who like retro and vintage images is Wirtschaftswundermuseum. Page after page with ads, illustrations, photos, packaging designs, boxes for toys, cook books and a lot more images of all kind, from the 1950s and 1960s. Focus is on the west and east Germany (DDR). Gives you a nice feel of how the image communication looked back then and there.
The site is a goldmine for me, that is interested in the history of illustration. Hope they don´t mind me showing some of my favourite images from www.wirtschaftswunderwelt.de These images range from 1951 to 1962: