Reference books are located on the 3rd floor of the Library. They cannot be checked out, but a scanner is available on the main floor of the Library for your use.
Good sources for photographs
Atrocities, Massacres, and War Crimes
Historical Dictionary of Holocaust Cinema
The Yad Vashem Encyclopedia of the Ghettos During the Holocaust
Encyclopedia of Terrorism
Encyclopedia of the Holocaust by 
Historical dictionary of the Holocaust by 