Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | Noninterference | 1987 | Harry Turtledove | Buy |
| 2 | Agent of Byzantium | 1987 | Harry Turtledove | Buy |
| 3 | A Different Flesh | 1988 | Harry Turtledove | Buy |
| 4 | Kaleidoscope | 1990 | Harry Turtledove | Buy |
| 5 | A World of Difference | 1990 | Harry Turtledove | Buy |
| 6 | Earthgrip | 1991 | Harry Turtledove | Buy |
| 7 | The Guns of the South | 1992 | Harry Turtledove | Buy |
| 8 | The Case of the Toxic Spell Dump | 1993 | Harry Turtledove | Buy |
| 9 | Departures | 1993 | Harry Turtledove | Buy |
| 10 | The Two Georges | 1995 | Harry Turtledove | Buy |
| 11 | Thessalonica | 1996 | Harry Turtledove | Buy |
| 12 | Between the Rivers | 1998 | Harry Turtledove | Buy |
| 13 | Justinian | 1998 | Harry Turtledove | Buy |
| 14 | Household Gods | 1999 | Harry Turtledove | Buy |
| 15 | After the Downfall | 2001 | Harry Turtledove | Buy |
| 16 | Ruled Britannia | 2002 | Harry Turtledove | Buy |
| 17 | In the Presence of Mine Enemies | 2003 | Harry Turtledove | Buy |
| 18 | Homeward Bound | 2004 | Harry Turtledove | Buy |
| 19 | Every Inch a King | 2005 | Harry Turtledove | Buy |
| 20 | Fort Pillow | 2006 | Harry Turtledove | Buy |
| 21 | The Man with the Iron Heart | 2008 | Harry Turtledove | Buy |
| 22 | Give Me Back My Legions! | 2009 | Harry Turtledove | Buy |
| 23 | Joe Steele | 2015 | Harry Turtledove | Buy |
| 24 | The House of Daniel | 2016 | Harry Turtledove | Buy |
| 25 | Through Darkest Europe | 2018 | Harry Turtledove | Buy |
| 26 | Alpha and Omega | 2019 | Harry Turtledove | Buy |
| 27 | Or Even Eagle Flew | 2021 | Harry Turtledove | Buy |
| 28 | Three Miles Down | 2022 | Harry Turtledove | Buy |
| 29 | Wages of Sin | 2023 | Harry Turtledove | Buy |
| 30 | City in Chains | 2025 | Harry Turtledove | Buy |
| 31 | Powerless | 2025 | Harry Turtledove | Buy |
Harry Turtledove’s standalone novels cover a wide range of settings and premises. The Guns of the South (1992) remains his most famous individual book, imagining what would happen if the Confederacy received modern weapons during the Civil War. Other standouts include Agent of Byzantium (1987), set in a world where Muhammad became a Christian saint, and Ruled Britannia (2002), where Shakespeare lives under Spanish occupation.
His standalones range from hard science fiction to historical thrillers. More recent titles like Three Miles Down (2022) and Wages of Sin (2023) show he continues to find new historical what-ifs to explore. Joe Steele (2015) imagines Joseph Stalin born in California and rising to become President of the United States.