History 841 Social conditions 140 African Americans 119 Politics and government 108 Race relations 84 Social life and customs 81 Social aspects 77 more ... Economic conditions 69 Indians of North America 59 Description and travel 47 Manners and customs 43 Society of Friends 39 Art 34 Education 33 Coal miners 32 Architecture 31 Urban renewal 30 Buildings, structures, etc 28 Church history 27 Economic history 27 Gettysburg, Battle of, Gettysburg, Pa., 1863 27 City planning 26 Labor unions 26 Women 26 Ethnic relations 25 Quakers 25 Religious aspects 25 Working class 25 Labor movement 24 Homes and haunts 23 less ...