Periodicals Societies, etc 55 History 45 African Americans 21 Genealogy 17 Jews 16 Education 11 more ... Pennsylvania Dutch 11 Charities 9 Study and teaching 9 Biography 8 Clubs 8 Directories 8 German Americans 8 Hospitals 8 Religious life 8 Social conditions 8 Students 8 Statistics 7 Coal mines and mining 6 Ethnic groups 6 Minorities 6 Economic conditions 5 History, Local 5 Architecture 4 Armenian Americans 4 Charities, Medical 4 Civil rights 4 Community development, Urban 4 Description and travel 4 Diseases 4 Dispensaries 4 Education (Higher) 4 Ethnic relations 4 Institutional care 4 Irish Americans 4 Older people 4 Politics and government 4 School yearbooks 4 Services for 4 less ...