I looked through the referer log, and it seems that many are:
http://images.google.com/images?q=louis+pasteur&svnum=10&hl=en&l...
I also found this: http://images.google.com/imgres?imgurl=www.wikipedia.com/upload/naoko.gif&am...
I.E.
http://www.wikipedia.com/wiki/Naoko+Takeuchi
It seems unlikely that this picture is available to us?
--Jimbo