After reading Maus II, I thought thought about when I visited the Holocaust Museum. The first link is from the US Holocaust Memorial Museum gives a brief overview of what the Nazis tried to do before the camps were used. there are also many links to various parts of the site and also interviews with the survivors.

http://www.ushmm.org/wlc/article.php?lang=en&ModuleId=10005144

This second link I found searching google and it has a picture like of the entrance to the camps like in the last pages of Maus I. at the bottom of this link there is another link that shows an article about Auschwitz name change.

http://whc.unesco.org/en/list/31

On a lighter note, I found that the clash between Spiegelman and Spielberg was interesting and I found in google books a the part where Spiegelman commented about this part in his life.

http://books.google.com/books?id=uhlOpk8bGoEC&pg=PA72&lpg=PA72&dq=art+spiegelman+steven+spielberg+maus+tails&source=bl&ots=n1fIzC-g5p&sig=7rcoASRM8JZuU8hPIV3ptror4YQ&hl=en&ei=wbDKSo3UDpXdlAfO09SSAw&sa=X&oi=book_result&ct=result&resnum=4#v=onepage&q=&f=false