History Social conditions 87 Race relations 65 African Americans 57 Politics and government 51 Social aspects 50 Economic conditions 40 more ... Social life and customs 39 Indians of North America 32 Coal miners 23 Church history 22 Religious aspects 21 Society of Friends 20 Working class 20 Manners and customs 19 Civil rights 18 Labor unions 18 Ethnic relations 17 Quakers 17 Women 17 Gettysburg, Battle of, Gettysburg, Pa., 1863 16 Steel industry and trade 15 Architecture 14 City planning 14 Economic history 14 Iron and steel workers 14 Antislavery movements 13 Histoire 13 Immigrants 13 Intellectual life 13 less ...