The image is a clone of  which is a creative commons image and acceptable for wikipedia.  I don't know how to add the right copyright tag to it.  I will try to figure it out.

You have a bigger problem than unsourced images.  Did you know that someone is corrupting images so that they turn into banner ads with external links?  See the Xenu article for an example of this.  I was trying to fix the same problem on causes of world war ii when I cloned the image, but apparently this is widespread.  This is a particularly insidious type of vandalism because it affects images, is harder to detect and prevent, and could easily ruin wikipedia if it gets out of control.

I think you have a bigger problem on your hands than me and my commons map image, don't you?