It's watermarked.
That's still a problem -- see
Copyright complaint from Corbis
http://www.freerepublic.com/focus/f-news/1084067/posts It's a big flap recently -- on account of those Kerry-Fond picture, which was doctored to have them stand next to each other.
Please read the Corbis complaint and Jim Robinson's reply in the thread above.
Believe me, I am not trying to be picky -- just read that and you'll see.
BTW -- I think you are doing a fantastic job in digging things up on Kerry! :)