History 794 Regimental histories 177 Politics and government 142 Slavery 71 Pennsylvania Infantry 63 Soldiers 55 Registers of births, etc 53 more ... Sources 52 Histoire 44 Campaigns 43 Legislators 42 Antislavery movements 39 Genealogy 39 Societies, etc 38 African Americans 36 Description and travel 29 Biography 27 Registers 25 Social conditions 24 Emigration and immigration 23 Gettysburg, Battle of, Gettysburg, Pa., 1863 23 Indians of North America 22 Personal narratives 22 Social life and customs 22 Lawyers 20 Social aspects 20 Law and legislation 19 Manuscripts 19 German Americans 18 Indexes 18 Vital records 18 Archives 17 Militia 17 Presidents 17 Republican 17 Campaign literature 16 Manuscripts, American 16 Officers 16 Travel 16 Education 15 less ...