Periodicals Societies, etc 52 History 41 African Americans 17 Jews 16 Genealogy 15 Education 10 more ... Biography 8 Charities 8 Clubs 8 Hospitals 8 Social conditions 8 Directories 7 German Americans 7 Pennsylvania Dutch 7 Religious life 7 Statistics 7 Students 7 Coal mines and mining 6 Ethnic groups 6 Study and teaching 6 Economic conditions 5 History, Local 5 Minorities 5 Architecture 4 Armenian Americans 4 Charities, Medical 4 Civil rights 4 Community development, Urban 4 Description and travel 4 Diseases 4 Dispensaries 4 Irish Americans 4 Older people 4 Politics and government 4 School yearbooks 4 Services for 4 Social life and customs 4 African American youth 3 Anthracite coal 3 less ...