I just got two images from the Creative Commons site.  The first one, a UMass picture is public domain.  The second one, a picture of the Alhambra from the Albaizin taken by Mihael Gremk, requires attributions, but I’m not sure how to do it. In the spirit of transparency, I give the site from where I got it:  http://commons.wikimedia.org/wiki/File:Granada_01.jpg I have cropped the picture a bit.