History 2,616 Politics and government 571 Regimental histories 512 Campaigns 268 Personal narratives 156 Slavery 128 Soldiers 116 more ... Pennsylvania Infantry 79 Histoire 72 Biography 70 Registers 67 African Americans 63 Causes 63 Generals 62 Prisoners and prisons 60 Gettysburg, Battle of, Gettysburg, Pa., 1863 58 Naval operations 56 Foreign relations 48 Sources 45 Reconstruction 43 Secession 41 Confederate side 40 Women 39 Enslaved persons 38 Social aspects 38 United States--History--Civil War, 1861-1865--Personal narratives 37 Registers of births, etc 36 United States--History--Civil War, 1861-1865--Personal Correspondence 36 Poetry 35 Presidents 35 Militia 34 Emancipation 33 Officers 33 Politique et gouvernement 32 African American soldiers 31 Foreign public opinion 31 Genealogy 31 Hospitals 31 Addresses, sermons, etc 30 Description and travel 30 less ...