Working class Labor movement 127 Labor 115 History 100 Labor unions 52 Travailleurs 26 Social conditions 25 more ... Emigration and immigration 14 Employment 14 Histoire 13 Periodicals 13 Political activity 13 Immigrants 12 Societies, etc 12 African Americans 11 Congresses 10 Economic conditions 10 Politics and government 10 Dwellings 9 Race relations 9 Socialism 9 Travail 9 Slavery 8 Textile workers 8 Housing 7 Minorities 7 Tenement houses 7 Coal miners 6 Communism 6 Czech Americans 6 Czechs 6 Ethnic groups 5 Foreign workers 5 Industries 5 Jews 5 Social life and customs 5 Sources 5 Wages 5 Activité politique 4 Civil rights 4 less ...