Fiction Radicalism 55 African Americans 44 Jews 35 History 26 Race relations 11 Socialism 10 more ... Utopias 10 Strikes and lockouts 9 Labor and laboring classes 8 Slavery 7 Indians of North America 6 American fiction 5 Frontier and pioneer life 5 Italians 5 World War, 1939-1945 5 British 4 Emigration and immigration 4 Germans 4 Women 4 World War, 1914-1918 4 Hungarians 3 Irish fiction 3 Race discrimination 3 Social life and customs 3 Apache 2 Catholics 2 Christian life 2 Clothing workers 2 Coal miners 2 Coal mines and mining 2 Conduct of life 2 East Indian Americans 2 East Indians 2 Enslaved persons 2 Ethnic attitudes 2 Foreign languages 2 German 2 Irish 2 Irish Americans 2 less ...