During the Great Depression, Jack helps his mother make cookies for the needy at their church, learns the story of how the first Christmas cookies were used to spread the gospel to people who could not read, then finds a way to bring that story to life.

A boy recounts his annual summer trips to rural Illinois with his sister during the Great Depression to visit their larger-than-life grandmother.

The magic tree house carries Jack and Annie to New York City in 1938 on a mission to rescue the last unicorn. The city is in the grip of a terrible snowstorm. To stop the blizzard, Jack and Annie must save the unicorn made famous in the Cloister's medieval tapestries. But will that be enough to help a city that faces so many troubles?

Twelve-year-old Abilene Tucker is the daughter of a drifter who, in the summer of 1936, sends her to stay with an old friend in Manifest, Kansas, where he grew up, and where she hopes to find out some things about his past. Over the summer she pieces together his story. Having heard stories about Manifest, Abilene is disappointed to find that it's just a dried-up, worn-out old town. But her disappointment quickly turns to excitement when she discovers...

The third novel in a trilogy, Flesh on the Bone picks up the story of the married children of the first two books. Jake and Raisa Kessel emigrated with their respective parents as seven and eight-year-old children in 1907. Their immigrant parents came to this country with only the "flesh on their bones." They struggled to make their own way even with all America had to offer. Now, Jake and Raisa are hungry for new horizons and head east to Michigan...