Here’s a place that has, books, videos, posters, models, art and others stuff all concerning WW2. It’s not cheap but there is a great variation. Have them send you a free catalog.
http://www.historicaviation.com
Thanks for posting that site mate!
I hope that Twitch wouldn’t be upset if I’ll post a link to some American studies on WW2 (and not only):
http://cgsc.leavenworth.army.mil/carl/resources/csi/csi.asp#studies
I added here because it fits with the topic. 