Jack and his younger sister take a trip in their tree house back to ancient Egypt, where they help a queen's mummy continue her voyage to the Next Life.
Bob does not like the noisy, crowded streets and school hallways of his New York City home, so he decides to build a tree house in the cool, green calm of Central Park. Includes a note about the real Bob Redman.
Jack and Annie travel back to nineteenth-century Ireland to inspire a young Augusta Gregory to share her love of Irish legends and folktales with the world.