When thirteen-year-olds Jonah and Chip, who are both adopted, learn they were discovered on a plane that appeared out of nowhere, full of babies

Time travelers Jonah and Katherine arrive in 1611 to rescue missing child John Hudson, son of the explorer Henry Hudson, but just as the mutiny o

Time-travelers Jonah and Katherine are summoned to help another missing child from history, this time Virginia Dare from the Roanoke Colony, but

Jonah, Katherine, Chip, and Alex suddenly find themselves in 1483 at the Tower of London, where they discover that Chip and Alex are Prince Edwar

Time-travelers Jonah and Katherine are summoned to help another missing child from history, Virginia Dare from the Roanoke Colony, but their jour

When Jonah and Katherine travel to early 1900s Switzerland and Serbia to return Albert Einstein's daughter, Lieserl, to history, her mother Milev

Jonah, Katherine, Chip, and Alex suddenly find themselves in 1483 at the Tower of London, where they discover that Chip and Alex are Prince Edwar

Recounts the events of the Boston battle that ignited the American Revolution, tracing the experiences of Patriot leader Dr. Joseph Warren, a new

When Sarah, an explorer mouse, meets Sam she gives him the courage to finally climb to the highest library shelves--and beyond--and he shows her

Recounts the events of the Boston battle that ignited the American Revolution, tracing the experiences of Patriot leader Dr. Joseph Warren, a new

Time travelers Jonah and Katherine arrive in 1611 to rescue missing child John Hudson, son of the explorer Henry Hudson, but just as the mutiny o

When Jonah and Katherine travel to early 1900s Switzerland and Serbia to return Albert Einstein's daughter, Lieserl, to history, her mother Milev