They settled in a city where 200,000 Jews thrived. After Kristallnacht, her family fled and she stayed behind.

They settled in a city where 200,000 Jews thrived. After Kristallnacht, her family fled and she stayed behind.

The City Without Jews: Life and Death in Nazi Vienna By Douglas Smith FSG, 560 pages, $37 Several years ago, the historian Douglas Smith, who has won wide recognition for his several books on modern Russia, turned his attention to Vienna and its Jewish community during the rise and fall of the Third Reich. During his research, he discovered the recently published diary and letters of Mignon Langnas (née Rottenberg), one of the few Jews who remai…