• Abraham Lincoln's Classroom
  An extraordinary online resource for students and teachers, sponsored by the Gilder-Lehrman Institute. Not to be missed if you are a teacher covering the Civil War.
• Abraham Lincoln Presidential Library & Museum, Springfield, Illinois
• The Lincoln Institute
  
• Our American Cousin: The Play That Changed History
  Introductory chapter from Beacham Publishing's fascinating reference work on the play and events at Ford's Theatre the night Lincoln was shot.
• Mr. Lincoln's White House
• Lincoln OnLine
  A jumping-off point for the many Web sites relating to Abraham Lincoln.
• The Lincoln Group of New York
• The Lincoln Group of the District of Columbia
• Abraham Lincoln Institute of the Mid-Atlantic
• Mr. Lincoln's Virtual Library
  Abraham Lincoln: Internet Resources from the Library of Congress, including assassination artifacts, campaign material, links to all the Lincoln portraits in the Library collection, etc.

• U.S. Civil War Center
  Links to every sort of Civil War-related material, including photos from the National Archives, maps, diaries, databases, much more.
• Civil War Index Page
  Dakota State University links
• www.civilwar.com
  General interest Civil War site.
• National Museum of the Civil War Soldier
  Pamplin Historical Park in Petersburg, Virginia, one of the most exciting new historical attractions in the country. Worth a visit.
• National Civil War Museum
  The new museum in Harrisburg, PA that attempts to portray the story of the Nation's Civil War. 
• Sons of Union Veterans of the Civil War
  Organization devoted to preserving the heritage of the Grand Army of the Republic
• American Battlefield Protection Program
• Interview with Prof. James M. McPherson
  Transcript of David Gergen's interview with the noted historian about the genesis of his book, For Cause & Comrade. Dr. McPherson shares some of the things he learned about what motivated soldiers on both sides.

Slavery

• Slave Narratives
  Fascinating range of online text narratives taken from personal experiences of slaves, slave dealers, etc.
• The Underground Railroad
  Devoted to the rich history of the Underground Railroad.

History Sites: General

• Museum of the City of New York
  Massive collection of American & New York history, culture, theatre memorabilia & art. Downloadable images & reproductions available.
• Chicago Historical Society
  Major collections of manuscripts, art, etc. Groundbreaking exhibitions developed specifically for online access.
• American Magic-Lantern Theatre
  America's only professional touring company re-creating Victorian magic-lantern shows