Among many forum posts on Armorama site, there was one posted recently that I have found to be very helpful. Author has posted a link to an online gallery with a vast selection of WWII photographs from the Normandy as well as other French regions. The photographs are from variety of sources and I found them to be a great source of reference. So before that particular post gets lost in the vast space of online forums, here is the link:

http://www.flickr.com/photos/photosnormandie/sets/