Periodicals 170 History 92 Societies, etc 88 German Americans 37 Description and travel 26 Genealogy 25 Almanacs, American 23 more ... Jews 23 Ethnic press 21 Students 21 African Americans 20 Education 20 Politics and government 18 Historic buildings 17 Religious life 17 Women 17 Charities 16 Churches 16 Germans 13 Almanacs, German 12 Architecture 12 Gay people 12 Restaurants 12 Pennsylvania Dutch 11 Art 10 Civil rights 10 Social conditions 10 Vietnamese Americans 10 AIDS (Disease) 9 Conservation and restoration 9 Housing 9 Polish Americans 9 Services for 9 Social life and customs 9 Societies 9 Study and teaching 9 Tourism 9 Asian Americans 8 Cemeteries 8 City planning 8 less ...