Crosstime Traffic Books in Order

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The Crosstime Traffic series, written by Harry Turtledove and published between 2003 and 2008, explores alternate histories through the lens of time travel. Each novel is set in a distinct historical divergence, ranging from a Muslim-repopulated Europe after a more deadly Black Death to a German-occupied United States following a Central Powers victory in World War I. The series consistently features time travelers navigating the consequences of historical shifts while confronting political, social, and technological challenges in their assigned timelines.

Publication order

In the order the books were originally released.

  1. Cover of Gunpowder empire

    Gunpowder empire

    2003 · Harry Turtledove

    In the late twenty-first century, Jeremy Solter travels through alternate timelines to join his family at the frontier of the Roman Empire. He works…

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  2. Cover of Curious notions

    Curious notions

    2004 · Harry Turtledove

    An alternate history novel in the Crosstime Traffic series in which the Central Powers won World War I and the German Empire conquered the United…

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  3. Cover of In high places

    In high places

    2005 · Harry Turtledove

    An alternate history novel in the Crosstime Traffic series, set in a world where the Black Death was far more virulent, killing 80 percent of…

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  4. Cover of The Disunited States of America (Crosstime Traffic)

    The Disunited States of America (Crosstime Traffic)

    2006 · Harry Turtledove

    Justin's family are Time Traders. The summer before he starts college, he travels with them to a version of Virginia where the American states never…

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  5. Cover of The Gladiator

    The Gladiator

    2007 · Harry Turtledove

    The Gladiator is a 2007 young adult novel by Harry Turtledove. It is part of the Crosstime Traffic series and takes place in an alternate history…

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  6. Cover of The Valley-Westside War (Crosstime Traffic)

    The Valley-Westside War (Crosstime Traffic)

    2008 · Harry Turtledove

    Valley-Westside War is a 2008 novel by Harry Turtledove. A global nuclear war broke out in 1967, collapsing civilization; the book is set in the…

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Frequently asked questions

What order should I read the Crosstime Traffic books in?

Read them in publication order, starting with “Gunpowder empire”. Start with “Gunpowder empire.”

How many books are in the Crosstime Traffic series?

We list 6 books by Harry Turtledove , published between 2003–2008.

Where can I buy the Crosstime Traffic books?

Each title above links to Amazon. See our affiliate disclosure.

Reading order compiled from author/publisher guidance and verified bibliographic data. Spotted a wrong order, a missing book, or any other mistake? and we'll correct it.