"When Greg and the Musketeers return to Paris and find the city under siege, they leap into action to prevent King Louis from being overthrown and history from being changed forever"--

After purchasing a time machine at a garage sale for three dollars, Liam uses it to summon Thomas Edison for help with his book report, but when a different Thomas Edison from the 1930s arrives, hilarity ensues.

Billy Stuart is a young raccoon who aspires to be just like his grandfather, a globe-trotting adventurer who knows no fear.

When he learns that his grandfather has found a way to travel through time and is leaving on another great voyage, he sets out to see him off (and maybe sneak along). Billy Stuart follows his grandfather's puzzling clues through a maze of caves and caverns to find him before he leaves, trailed by his

...

"Billy Chan is having the summer most twelve-year-olds dream about--bonding with his very own dragon and exploring the magical Dragon Realm! But the new world has not been without its perils as Billy and his friends have just barely escaped the clutches of the Dragon of Death and learned of a betrayal from someone they trusted. That betrayal leads to Billy's friend Dylan being kidnapped and taken through a time portal. Now Billy, Charlotte, and Ling-Fei...

When an explosion sends Brett back in time, he tries to help a farming community during a wheat storage that is leaving the people hungry.

Teaming up with the Epoch Squad under the command of Richard Nixon, Delia and her fellow time travelers visit 1778 Versailles to save a historic alliance between France and the United States.

Ranger, a golden retriever, could have been a great search-and-rescue-dog except for the squirrels--but one day he unearths a mysterious box and finds himself transported back to the year 1850 where his faithful service is really needed by a family traveling west along the Oregon Trail.

Fourteen-year-old Bobby Pendragon, apprentice to his Uncle Press, a Traveler responsible for solving interdimensional conflict, tries to locate the legendary lost land of Faar which may hold the key to the survival of the water-covered territory of Cloral, which stands on the brink of war.

After returning home from his travels through time, Brett is invited to build a new farm in the cold biome. But as he gathers crops, he falls down a portal that carries him to a terrifying future where he and his friends live in constant fear of creeper attacks.

Dak, Sera, and Riq have fixed the Great Breaks in history, but SQ is not beaten yet, and the biggest, boldest Infinity Ring adventure of all time has just begun.