There are 3 books in the Seeds of America series. The newest book is Ashes which came out in 2016.

1
Chains

Book cover of Chains
Isabel and her sister, Ruth, are slaves. Sold from one owner to the next, they arrive in New York as the Americans are fighting for their independence, and the English are struggling to maintain control. Soon Isabel is struggling too. Struggling to keep herself and her sister safe in a…
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2
Forge

Book cover of Forge
“One of the best novels they have ever read.” —Kirkus Reviews

Curzon navigates the dangers of being a runaway slave in this keenly felt second novel in in the historical middle grade The Seeds of America trilogy from acclaimed author Laurie Halse Anderson.

Blistering winds. Bitter cold. And the hope…

3
Ashes

Book cover of Ashes
Return to the American Revolution in this blistering conclusion to the Seeds of America trilogy that began with the bestselling National Book Award Finalist Chains and continued with Forge, which Kirkus Reviews called "the best book you'll ever read."
As the Revolutionary War rages on, Isabel and Curzon have narrowly…