Two murals decorate the two-story north entrance to Safford Elementary School. I took this shot from outside the fence at the corner of 13th Street and 5th Avenue. (The entrance is about a block away, so bring your binoculars or a zoom lens — or ask the school office for permission to get closer.)
Update (July 30, 2012): There's a mural at the back of the school. See The World at 14th & Herbert.