Mary Pope Osborne

Presents a non-fiction companion to the book "Dogs In The Dead Of Night," discussing cases where dogs have come to the rescue of people and other animals, and describes the roles of service and other working dogs.

The magic tree house whisks Jack and Annie away to Australia where they must save some animals from a wildfire.

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

When the magic tree house whisks Jack and Annie off to Greenland, they're not sure what time they've landed in, but they immediately know what their mission is: save a narwhal! Then they meet a young hunter named Leif Erikson and they ask for his help. But Leif has other ideas...

The magic tree house transports Jack and Annie on a mission to the Ice Age where they encounter Cro-Magnons, cave bears, sabertooth tigers, and woolly mammoths.

Their magic tree house takes Annie and Jack to Pompeii just as Vesuvius is about to erupt, and they must find a Roman scroll before everything is covered with burning ash.

The first Magic Tree House® Super Edition—and Jack and Annie’s most dangerous mission ever in the scariest time the world has ever known—World War II. With a longer story and additional facts and photographs, this is a thrilling adventure no reader will want to miss!
 
When the magic tree house takes Jack and Annie back to World War II, Europe is in trouble! It is June 1944 and the brother-and-sister...

The whole family joins in a lively small-town celebration of Independence Day, including a parade, a picnic, music, and fireworks. An author's note explains the origin of the celebration of July 4th.

We are warriors! Jack and Annie have met knights, pirates, ninjas, and Vikings, but they have never met the most fearsome warriors of all: Roman soldiers. When the magic tree house whisks them back to the early 100s AD, Jack and Annie find themselves in a Roman camp. Their mission: Be like a warrior. That is easier said than done! The Roman soldiers are much scarier in person--and suspicious of strangers. Then a mysterious man riding a black horse...

"Jack and Annie are whisked back in time by the magic tree house to meet Benjamin Franklin in Old Philadelphia"--