Ranger in time

"He's a golden retriever who has been trained as a search-and-rescue dog but can't officially pass the test because he's always getting distracted by squirrels during exercises. One day, he finds a mysterious first aid kid in the garden and is transported to the year 1850, where he meets a young boy named Sam Abbott. Sam's family is heading west on the Oregon Trail, which can be dangerous. It's up to Ranger to make sure the Abbotts get to Oregon safely!"--back...

This time the mysterious box that Ranger the Golden retriever found transports him to a Maryland plantation before the Civil War, where he must help a young house slave named Sarah and her younger brother Jesse find their way to the Underground Railroad and North to freedom, before Jesse is sold to a plantation further South.

Ranger, the time-traveling golden retriever, has landed in Viking age Iceland, where he helps a girl named Helga journey through the ash and smoke of an erupting volcano to find her father and bring him home.

Ranger, a time-traveling golden retriever with search-and-rescue training, heads to Normandy on the morning of the D-Day invasion where he meets Leo, a Jewish boy who is hiding with a local farmer, and Walt, a young American soldier fighting to free France from the Nazis.

Everyone says the Titanic is unsinkable, and Patrick Murphy believes this most of all. He grew up near the shipyard where the magnificent ship was built and officially started working there when he turned thirteen. He's even been chosen to be part of the crew during the Titanic's maiden voyage! Ranger meets Patrick before the ship sets sail, and once on board, they befriend Maryam and Hamad. But one night, the ship hits an iceberg and starts to take...

"Ranger has never needed his search-and-rescue training more than when he arrives at the World Trade Center on September 11, 2001. There he meets Risha Scott and her friend Max, who have come to work with Risha's mother for a school project. But when the unthinkable happens and the building is evacuated, Risha is separated from her mom. Can Ranger lead Risha to safety and help reunite her family?"--back cover.