History 2,221 Regimental histories 461 Campaigns 248 Personal narratives 145 Politics and government 135 Soldiers 108 Pennsylvania Infantry 77 more ... Biography 68 Slavery 63 Generals 59 Prisoners and prisons 59 Registers 56 Causes 55 Naval operations 54 African Americans 46 Confederate side 37 United States--History--Civil War, 1861-1865--Personal narratives 36 Women 36 Registers of births, etc 34 Sources 34 United States--History--Civil War, 1861-1865--Personal Correspondence 34 Poetry 32 Officers 31 Addresses, sermons, etc 30 Genealogy 30 Hospitals 30 Social aspects 30 Civil War, 1861-1865 27 Gettysburg (Pa.), Battle of, 1863 27 African American soldiers 26 Veterans 26 Confiscations and contributions 25 Medical care 25 Militia 24 Sermons 24 Civil War 23 Foreign public opinion 23 History, Military 23 Gettysburg, Battle of, Gettysburg, Pa., 1863 22 Reconstruction 22 less ...