History Civil War 41 Regimental histories 39 Politics and government 16 Campaigns 15 Slavery 14 Personal narratives 11 more ... Naval operations 8 African American troops 7 Hospitals 7 Newspaper clippings 7 Causes 6 Foreign public opinion 6 Hospitals, charities, etc 6 Civil War, United States 5 Confiscations and contributions 5 Enslaved persons 5 Militia 5 Army of the Potomac 4 Confederate side 4 Emancipation 4 Gettysburg, Battle of, Gettysburg, Pa., 1863 4 Reconstruction 4 Secession 4 Societies, etc 4 %SP3 3 African Americans 3 Afro-Americana 3 Michigan Infantry 3 Transportation 3 United States 3 10th 2 11th Regiment 2 23rd 2 Armies 2 Biography 2 Charities 2 Claims 2 Confiscations 2 Conscientious objectors 2 less ...