Henry J. Sage
Sage American History: Turning Points in the Civil War
Article detailing the turning points of the Civil War, including the battles at Antietam, Gettysburg, Vicksburg, along with the Emancipation Proclamation and Sherman's March. Link to virtual tour of Gettysburg battlefield.
Other
Cliometric Society: Turning Points in Civil War: Views From the Greenback Market
This article intends to determine which events of the U.S. Civil War were viewed as turning points by people at the time. (Published May 1994)