Using a mysterious wardrobe that allows them to travel through time, two eleven-year-olds, Federico a boy from the Italian Renaissance and Bee a girl from present-day New Jersey, work together to prevent the bickering between two great artists from changing the future.

With the realm at peace and few dragons about, the Knights of the Round Table are bored, so Merlin sends them to face the most terrible lizards of all--dinosaurs.

Travel to Ancient Greece with Jack and Annie as they meet Alexander the Great and help tame his wild stallion.

Life used to be great for Rose: full of friends, a loving mom, and a growing fashion blog. But when her mother dies in a car crash, Rose is sent away to live with a strange grandmother she hardly knows and forced to attend a new school where mean girls ridicule her at every turn. The only place Rose finds refuge is in her grandmother's greenhouse. But one night she sees a strange light glowing from within it. She goes to investigate...and finds...

When Stosh travels back in time to 1941 in hopes of preventing the Japanese attack on Pearl Harbor that brought the United States into World War II, he meets Ted Williams, one of the greatest hitters in baseball history. Includes notes about Williams' life and career.

"Ever since Corey Fletcher found out that he's the world's first "throwback," with the power to not only visit history, but change it, he's been spending as much time in the past as possible. Corey loves using his skills to fix problems and help his friends and family. But as Corey becomes more and more addicted to rewriting history, he learns that time travel might change him in ways he may never be able to reverse. Aware now that he can't keep going...

The magic treehouse whisks Jack and Annie back to the days of deserted islands, secret maps, hidden gold, and nasty pirates.

When Eleanor Roosevelt and Fala turn up in ten-year-old Nolan's bedroom closet, his mother, taking Mrs. Roosevelt for the new baby sitter, leaves him and his little sister Olive with her.

After returning the missing children from history to their original time periods, thirteen-year-old Jonah must save time itself when aviator Charles Lindbergh mysteriously appears and kidnaps Jonah's sister.

Joe Stoshack travels back to 1919, where he meets Shoeless Joe Jackson and tries to prevent the fixing of the World Series in which Jackon was wrongly implicated.