Where and When:
2014 World Science Fiction Convention,
London :
August 16, 2014
Eligibility Year:
2013
Long Form
- Winner (tie): Surrounded by Enemies: What If Kennedy Survived Dallas?, Bryce Zabel (Mill City)
- Winner (tie): The Windsor Faction, D. J. Taylor (Pegasus; Chatto & Windus)
- 1920: America's Great War, Robert Conroy (Baen)
- The Secret of Abdu el Yezdi, Mark Hodder (Pyr; Ebury)