Nice archive of poster designs. 20th-century Soviet and Russian propaganda, advertising, and art posters, created between 1917 and 1991, offers a beautiful perspective on mid-century design and the modernist aesthetic from the other side of the Iron Curtain.
A poster encouraging kids to draw light til' they know it's right! So many kids draw hard and make it hard to erase the mistakes. Usually they waste paper because they cannot erase the original hard pencil marks. They need to know the basics of sketching.