Forstchen, William R. "Lee's Victory at Gettysburg… and Then What?"
Divergence: 1863 CE
Summary: Non-fictional speculation indicating that even had the Confederacy won at Gettysburg (most likely during the second day), weather, logistics, and the defenses of Washington would have combined to prevent any immediate Confederate victory in the American Civil War.
Published: In Alternate Gettysburgs (eds. Brian M. Thomsen and Martin H. Greenberg), q.v.