Turtledove, Harry

David Fisher, an ordinary EPA (Environmental Perfection Agency) bureaucrat, is suddenly forced into the unfamiliar role of hero when he investigates a toxic spell dump and finds an ancient deity determined to topple civilization.

In an alternate history of the United States, Jake Featherston, leader of the ruling Freedom Party, has whipped the Confederate States into a frenzy of hatred, sending slaves to prison camps, and leading his armies into a bloody conflict with Canada.

Describes the problems after World War I in an alternate history where the Confederate States are independent and the United States is colonizing Canada, and chronicles the rise of possible leaders and terrorists, such as Socialists in the north and a racist in the south.

When their parents go home briefly and the gateway suddenly stops working, Jeremy and Amanda Solters, teenage siblings in a family of professional travelers to parallel timelines, are left to fend for themselves in a still-thriving Rome, which gets even more complicated when the Empire comes under attack.

Roman politician Publius Quinctilius Varus is assigned three legions and sent to the Roman frontier east of the Rhine to subdue the barbarous German tribes, not realizing there is a traitor in the ranks who is trying to learn everything he can about the Roman arts of war and policy in an effort to help Germany survive.

The summer before starting college, Justin joins his Time Trading parents in their journey to a different Virginia, where the American states never become a single country, where he falls in love with a young woman and becomes pulled into a war between Ohio and Virginia.

A World War II alternate history explores the lives of historic leaders, soldiers, and civilians in a world where Chamberlain chooses not to appease Adolf Hitler in 1938.

An alternate history of World War II continues to explore what would have happened in the lives of leaders, soldiers, and civilians had Great Britain's Neville Chamberlain not appeased Hitler.