Quarrie, Bruce. Hitler: The Victory that Nearly Was
Divergence: 1939 CE
What if: Germany started a "Manhattan Project" in 1939 and postponed Barbarossa until 1942, and the Japanese did not attack Pearl Harbor until September 1942.
Summary: Detailed description of World War II from Malta to Beria's capitulation of the Soviet Union in June 1943, with an afterword about the A-bombing of New York.
Published: David & Charles 1988 (0715392158BUY); Guild 1989.