- The American Civil War Homepage
- Civil War Soldiers & Sailors System (National Park Service) [ Regiment Search <> Soldier Search <> Sailor Search ]
- Compendium of the War of the Rebellion (Frederick H. Dyer; 1908) [ Battles <> Name Index of Commands <> Regimental Histories ]
- Official Records of the Union and Confederate Navies in the War of
the Rebellion (1894 - 1922) - Regimental Losses in the American Civil War, 1861-1865 (William F.Fox; 1889) [ Another copy ]
- Supplement to the Official Records of the Union and Confederate Armies (WorldCat)
- The United States Civil War Center (Louisiana State University Libraries)
- The Valley of the Shadow (Virginia Center for Digital History)
- The War of the Rebellion: a Compilation of the Official Records of the Union and Confederate Armies (1880 - 1901)
- Digital Libraries
- 19th-Century American Documents (Perseus, Tufts University)
- American Civil War Collections (University of Virginia Electronic Text Center)
- American Memory (Library of Congress)
- Combined Arms Research Library Digital Library (U.S. Army Command and General Staff College)
- Documenting the American South (University of North Carolina)
- Google Books (Author or Title Search)
- Internet Text Archive
- Making of America (Cornell University)
- Making of America (University of Michigan)
- Samuel J. May Anti-Slavery Collection (Cornell University)
- U. S. Heritage Collection Online: Resource Guides & Finding Aids (U.S. Army Military History Institute)
- Newspapers
- Brooklyn Daily Eagle Online, 1841-1902 (Brooklyn Public Library)
- Civil War-Era Newspapers (The Valley of the Shadow)
- Civil War Newspapers (Vicki Betts)
- Harper's Weekly Original Civil War Newspapers
- The New South Newspaper, Port Royal & Beaufort, 1862-1866
- Pennsylvania Civil War Newspapers (Penn State)
- The New York Times (from 1851; free registration required)
- Richmond Daily Dispatch, 1860-1865 (University of Richmond)
- Photographs & Prints
- America on Stone: 19th Century American Lithographs (Smithsonian Institution)
- Civil War (Images of 19th Century African Americans, Digital Schomburg)
- Civil War Treasures from the New-York Historical Society
- Civil War Medical Care: Photographs and Drawings from the United States Sanitary Commission Collection, 1861-1872 (NYPL Digital Gallery)
- CivilWar at Smithsonian
- Gardner's Photographic Sketch Book of the War (Cornell University)
- The Generals of the American Civil War
- The Photographic History of the Civil War in Ten Volumes
- Photographs of African Americans During the Civil War (Library of Congress)
- Photographs of Named Civil War Enlisted Men (Library of Congress)
- Photographs of Women During the Civil War (Library of Congress)
- Pictures of the Civil War (The National Archives)
- Selected Civil War Photographs (Library of Congress)
Last revised 16 July 2008