- Civil War Homepage
- Library of Congress: American Memory Project
- National Archives and Records
- New York Historical Society
- U.S. Military Institute
- Civil War Soldier and Sailor System
- Civil War Generals
- National Parks Civil War Battlefields: Since 1919, NPCA has been the leading voice of the American people in protecting and enhancing our National Park System’s superlative examples of America’s natural, cultural, and historic heritage. The park system features dozens of battlefields and related Civil War sites.
- Civil War Preservation Trust
- Today's Civil War
- Boston Athenaeum
- Olde Colony Civil War Round Table (Massachusetts)
- The Bohemian Brigade
- The Valley of the Shadow: Two Communities in the American Civil War
- The Stirling Family Papers: A collection of 62 letters in extent, primarily written by a Civil War Union officer's wife, Tillie Farquhar Sterling, with additional letters written by Tillie's husband, Will Sterling, and Tillie's mother, Anna Virginia ("A. V.") Farquhar.
- Civil War Art
- Frank Leslie's 'The Soldier in Our Civil War'
- African-American Civil War Soldiers
- Artist as Witness: Railroads in the U.S.A.
- Central Pacific Railroad Photographic History Museum
- Chinese Labor in the Gilded Age
- History of the Atlantic Cable & Undersea Communication
- Saint Gaudens National Historic Site
- Virginia Museum of Fine Arts
- Online Guide to Cotton and its Role in the Civil War
