[[Douglas Hofstadter]] also contains an image, [[Image:DH00.jpg]], which is listed as GFDL. But the description of the image is "Indiana University Douglas Hofstadter home page", and looking at the Hofstadter's homepage (http://www.cogs.indiana.edu/people/homepages/hofstadter.html) I see the same image there, with no mention of the GFDL. The image was uploaded by [[User:Paul venter]].
There are probably some tags and procedures that are supposed to be followed in this case. I don't feel like looking them up. So I'll post this here and hope someone else fixes it.
Anthony