Allred, Lee. "East of Appomattox"
Divergence: 1863 CE
What if: The Confederacy won the battle of Gettysburg and then captured Washington.
Summary: A half dozen years later, Robert E. Lee is dispatched to London because Britain has withdrawn its recognition of the Confederacy. Officially ignored, he finds a deeper game is afoot.
Published: In Alternate Generals III (eds. Harry Turtledove and Roland J. Green), q.v.; and in For the Strength of the Hills, Rookhouse 2012 (0615663079BUY).