History 819 Politics and government 326 Description and travel 150 Slavery 122 Sermons, American 86 Foreign relations 83 Clergy 81 more ... African Americans 69 Churches 69 Sources 68 Histoire 64 Biography 61 Railroads 61 Education 59 Sermons 58 Indians of North America 51 Missions 48 Societies, etc 47 Colonies 46 Almanacs, American 44 Presidents 43 Canals 41 Causes 41 Legislators 41 Printing 41 Genealogy 40 Law 39 Travel 39 Church history 37 Revolution 36 Museums 35 Agriculture 34 Finance, Public 34 Presbyterian Church 33 Restaurants 33 Economic conditions 32 Colonization 31 Commerce 31 Congregational churches 31 Social life and customs 31 less ...