- Award Category: Best Long Form Alternate History Award Category Record # 520
- Award Type: Sidewise Awards for Alternate History
| 2000 | ||
|---|---|---|
| Win | Ash: A Secret History (variant of A Secret History) | Mary Gentle |
| Nomination | Inca | Suzanne Allés Blom |
| Nomination | The Nantucket Trilogy (Island in the Sea of Time, Against the Tide of Years & On the Oceans of Eternity) | S. M. Stirling |
| --- Preliminary Nominees ------- | ||
| * | 1632 | Eric Flint |
| * | Breakthroughs | Harry Turtledove |
| * | Carthage Ascendant | Mary Gentle |
| * | Custer's Luck | William E. Moody and Robert Skimin |
| * | Down to Earth | Harry Turtledove |
| * | Downs-Lord Day | John Whitbourn |
| * | Empire of Unreason | J. Gregory Keyes |
| * | Fortune's Stroke | David Drake and Eric Flint |
| * | Fox on the Rhine | Michael Dobson and Douglas Niles |
| * | Lost Burgundy | Mary Gentle |
| * | Naked Presidents | James Silver |
| * | On the Oceans of Eternity | S. M. Stirling |
| * | Prince of Hearts | Katy Cooper |
| * | Rogue Flyer | Loren L. Coleman |
| * | Stars & Stripes in Peril (variant of Stars and Stripes in Peril) | Harry Harrison |
| * | The Amber Spyglass | Philip Pullman |
| * | The Gate of Fire | Thomas Harlan |
| * | The Napoleon Options | Jonathan North |
| * | The Wild Machines | Mary Gentle |