History 4,005 Regimental histories 725 Politics and government 400 Campaigns 392 World War, 1939-1945 322 World War, 1914-1918 280 Personal narratives 220 more ... Histoire 193 Soldiers 152 Foreign relations 141 Causes 140 Civil War 134 Naval operations 123 Slavery 115 Biography 99 Generals 99 Sources 89 Prisoners and prisons 83 African Americans 82 Indians of North America 80 Officers 79 Pennsylvania Infantry 79 Registers 79 Wars 65 Women 64 Social aspects 62 Hist 60 Presidents 60 Gettysburg, Battle of, Gettysburg, Pa., 1863 57 Militia 57 Veterans 56 Japanese Americans 55 Societies, etc 55 History, Military 53 War 53 Description and travel 52 Mexican War, 1846-1848 52 Confederate side 51 African American soldiers 47 Poetry 47 less ...