Abraham Lincoln Papers – Library of Congress collection of Lincoln correspondence and notes.
Battle and Leaders of the Civil War – Online resource for the 1956 edition provided through Ohio State University.
Collected Works of Abraham Lincoln – Online resource for the 1953 publication provided through the Abraham Lincoln Association.
Civil War Soldiers and Sailors System – Database containing basic facts about servicemen during the Civil War. Created by the National Park Service.
Confederate Veteran Magazine – Digital archive of the magazine from 1893-1932 from the University of Pennsylvania.
Essential Civil War Curriculum – A large collection of academic essays on a wide variety of Civil War topics from the Virginia Center for Civil War Studies.
Fold3 Civil War Records – Collection of complied service records and other documents for Union and Confederate soldiers (membership required for unlimited access).
Gilder Lehrman Institute of American History – Collection of primary historical documents, essays, and resources for teachers.
Hidden Patterns of the Civil War – From the University of Richmond Digital Scholarship Lab, digital media presentations on sectional crisis, slavery, and emancipation during the Civil War era.
Images from the History of Medicine – Vast collection of photographs and art from the U.S. National Library of Medicine.
The Illustrated London News – Digital archive of newspaper content during the American Civil War.
Mathew Brady Civil War Photographs – National Archives digitization of Brady photographs.
The National Archives Civil War Military Records – Vast database of military related records in the archives.
The National Tribune – Library of Congress digitization of the Union veterans’ newspaper from 1877-1911.
New York Civil War Newspaper Clipping Files – Newspaper source material on 219 New York units that served in the war.
NOAA Historical Coastal Map and Chart Collection – Coastal survey maps and charts from the Civil War.
Official Records of the Union and Confederate Armies – Formal reports and correspondence of both armies.
Official Records of the Union Confederate Navies– Formal reports and correspondence of both navies.
Pennsylvania Volunteers of the Civil War – Database containing a vast array of information on Pennsylvania regiments.
Richmond Daily Dispatch – Digital archive of newspaper content from 1860-1865.
Smithsonian Institution Civil War Site – Collection of artifacts and portraits from the Smithsonian and the National Portrait Gallery.
Southern Historical Collection – Vast collection of archival material from the University of North Carolina.
U.S. Army Center of Military History – Collection of materials commemorating U.S. Army operations in the Civil War.
Ulysses S. Grant Presidential Library – Collection of Grant papers and related items at Mississippi State University.
The Valley of the Shadow – Digital collection of archival information from two communities – one North and one South – during the Civil War.
West Point Civil War Maps – From the USMA Department of History, a collection of maps from their campaign atlases.