Lewis, Oscar. The Lost Years: A Biographical Fantasy
Divergence: 1865 CE
What if: Lincoln survived Booth's assassination attempt and suffered an unpopular second term trying to implement a humane Reconstruction.
Summary: Diary and newspaper excerpts about the last month of Lincoln's presidency and his vacation in California during the summer of 1869.
Published: Knopf 1951.
— Included in A Treasury of Great Science Fiction Vol. 2 (ed. Anthony Boucher), Nelson Doubleday/SFBC 1959.