The Civil War TrustThe Civil War Trust is the largest nonprofit organization dedicated to the preservation of America's battlefields. This site has many battlefield maps and photos.
CivilWar@SmithsonianProduced by the National Portrait Gallery, this site has an extensive image collection of Civil War artifacts. With background information included, the visitor can find anything from Abraham Lincoln’s beaver top hat to examples of uniforms and weapons. The site also includes portraits, sculptures, and photographs.
American Civil War (The History Channel)This site includes an extensive gallery of clips from History Channel’s Civil War documentaries, photographs, topic overviews, an interactive map of Sherman’s march, and an interactive graphical overview of the war. Topics include: technology, women, espionage, medicine, biographies of important people, and discussions of important battles.