Pandas and other endangered species by Osborne, Mary Pope
Horse heroes:  a nonfiction companion to Magic Tree House #49: Stallion by Starlight by Osborne, Mary Pope
Heroes for all times by Osborne, Mary Pope
Abraham Lincoln by Osborne, Mary Pope
Soccer by Osborne, Mary Pope
Dinosaurs by Osborne, Mary Pope
Dog Heroes by Osborne, Mary Pope
Titanic by Osborne, Mary Pope
Rain Forests by Osborne, Mary Pope
Ancient Greece and the Olympics by Osborne, Mary Pope
Dolphins and Sharks by Osborne, Mary Pope
Tsunamis and Other Natural Disasters by Osborne, Mary Pope
Twisters and Other Terrible Storms by Osborne, Mary Pope
Mummies and Pyramids by Osborne, Mary Pope
Sea Monsters by Osborne, Mary Pope
Sabertooths and the Ice Age by Osborne, Mary Pope
Space by Osborne, Mary Pope
Penguins and Antarctica by Osborne, Mary Pope
Pirates by Osborne, Mary Pope
Vikings by Osborne, Mary Pope
Dogsledding and Extreme Sports by Osborne, Mary Pope
Polar Bears and the Arctic by Osborne, Mary Pope
Ninjas and Samurai by Osborne, Mary Pope
American Revolution by Osborne, Mary Pope