Eva Mozes Kor and her twin sister were the victims of medical and genetic experiments at the hands of Josef Mengele in Auschwitz. She recently did an AMA on Reddit.
The Library of Congress has posted a series of colour photos from the 1930s and 1940s online. [more inside]
A gallery of personalized bomber jackets from WWII with descriptions.
In 1941, the Special Operations Executive forged documents, including passports, in order to help the resistance. Here's the one they made for Adolf Hitler, with a better view of the photos available on this site.
At first, Collectors Weekly deleted virtually anything listed on their site bearing a Nazi swastika. Now they are explaining what changed their mind and why some people collect this particular paraphernalia.