If you haven’t checked out Urban Alley yet you definitely should!
http://makestuffeveryday.com/urban-alley-norman-new-mural/
http://makestuffeveryday.com/urban-alley-norman-new-mural/
http://www.koco.com/article/norman-group-transforms-alley-into-art-show-to-cover-up-graffiti-2/4368965