History 317 World War, 1939-1945 299 Holocaust, Jewish (1939-1945) 202 Jews 164 Ethnic relations 76 Vietnam War, 1961-1975 75 Persecutions 67 more ... Holocaust survivors 42 Campaigns 37 Women 36 Soldiers 34 Atrocities 32 Underground movements 32 Politics and government 30 Prisoners of war 29 World War, 1914-1918 28 Social conditions 23 Prisoners and prisons, German 22 Children 21 Childhood and youth 20 Refugees 20 Jewish children in the Holocaust 19 Womyn 19 Concentration camps 17 Travel 17 Jewish resistance 16 Japanese Americans 14 Social aspects 14 Biography 13 Description and travel 13 less ...