History 48 Description and travel 22 Economic conditions 8 Indians of North America 8 Church history 7 Delaware Indians 7 Clergy 6 more ... Railroads 6 Social life and customs 6 Sources 6 Commerce 5 Genealogy 5 Historic sites 5 Bibliography 4 Biography 4 Germans 4 Lutheran Church 4 Periodicals 4 Societies, etc 4 Archival resources 3 Canals 3 Catalogs 3 Guide-books 3 Histoire 3 Identification 3 Manuscripts, American 3 Political activity 3 Registers of births, etc 3 Social conditions 3 African Americans 2 Antislavery movements 2 Archives 2 Automobile travel 2 Boundaries 2 Bridges 2 British forces 2 Campaigns 2 Cities and towns 2 Civil rights 2 Colonies 2 less ...