That's how you tell. Zsa Zsa had two sisters, one her identical twin Eva. The one who was in Green Acres. People confused them all the time. In fact it's very likely why there's so much attention on her death lately.

It contains the biography of Adolf Hitler, Horst Wessel, Dr. Joseph Goebbels, Eva Hitler, Reinhard Heydrich, Erich Hartmann, Otto Skorzeny, Heinrich Himmler, Hermann Göring among many other topics. The cultural and technological advancements of the Reich are also explored such as the Tiger Tanks, Jet fighters, helicopters and ballistic missiles of World War II.