History 13 Polish Americans 12 African Americans 10 Social conditions 7 Ethnic groups 6 Labor 5 Polish people 5 more ... Race relations 5 Societies, etc 4 Ukrainian Americans 4 Generals 3 Minorities 3 Art, Polish 2 Automobile industry and trade 2 Foreign population 2 Frontier and pioneer life 2 Guidebooks 2 Histoire 2 Human geography 2 Irish Americans 2 Jewish newspapers 2 Labor unions 2 Officers 2 Polish American Catholics 2 Polish American newspapers 2 Pontiac's Conspiracy, 1763-1765 2 Riot, 1943 2 Romanian Americans 2 Romanians 2 Social classes 2 Ukrainians 2 Yugoslavs 2 Activistes 1 African American automobile industry workers 1 Afro-American membership 1 Américaines d'origine chinoise 1 Américains d'origine chinoise 1 Américains d'origine chinoise 1 Antiquities 1 Arab Americans 1 less ...