after reading my final post i can see that this postcard image is the only one (of course) that will not enlarge . . . no idea why but i did check on the other photos and posts referred to above and all of those can be enlarged so you should be able to get a good idea of what they look like.
i have also posted these on my flickr page (http://www.flickr.com/photos/28992970@N02/3951665270/). and they can be super enlarged if you would like to see the details of this shot.