Schlink, Bernhard. The Reader
Diary of Anne Frank
Keneally, Thomas. Schindler's List. This remarkable story took place near Krakow.
Levi, Primo.
These are one of the best books on this painful subject: a survivor muses on the unthinkable, and maintains his humanity.
Otto, Friedrich. “The Kingdom of Auschwitz” Atlantic Monthly. Vol. 248, #3 (September 1981), pp. 30 - 60. A short, comprehensive report - and in reading of such a painful nature, short may be best.
Ringelblum, Emmuel. Notes from the Warsaw Ghetto.
Wiesel, Elie. Night.