I think it's important to say that out of all the images on my particular exam I had only seen one previously. It wasn't the same image, obviously, but very similar. All of my other images were very unique and were of things that I wasn't expecting to see at all. I'm not sure that browsing Goljan or WebPath the night before would have helped me in the slightest, but that was just for my exam, and that isn't to say that it won't help someone else.
I was very surprised with the unique images (and the way they use them to test your knowledge) that appeared on my exam.