First we have a collection of some of the best photos of “street art” from 2011. It’s actually more like a random collection of art that one can see outside. Regardless of that, most of this stuff is genius. Click on the pic to go to the collection.
Second we have a collection of old U.S. government sponsored posters from the years 1936 to 1943. Some of them had some good advice and some of them were gorgeous, like the one below. Check them out by clicking on the poster.