- A big day for baseball, by Mary Pope Osborne ; jacket illustration by Sal Murdocca ; interior illustrations by Ag Ford
- Wild West, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Isidre Monés
- A big day for baseball, Mary Pope Osborne
- Hurricane heroes in Texas, in 1900, Galveston was underwater!, by Mary Pope Osborne ; illustrated by AG Ford
- Dinosaurs, by Will Osborne and Mary Pope Osborne ; illustrated by Sal Murdocca
- Late lunch with llamas, by Mary Pope Osborne ; illustrated by AG Ford
- A big day for baseball, by Mary Pope Osborne ; jacket illustration by Sal Murdocca ; interior illustrations by Ag Ford
- Soccer, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Night of the ninth dragon, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Incredible fact book, Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Magic tricks from the tree house, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Dogsledding and extreme sports, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Carlo Molinari
- High time for heroes, Mary Pope Osborne ; cover art and interior illustrations, Sal Murdocca
- Twisters and other terrible storms, by Will Osborne and Mary Pope Osborne ; illustrated by Sal Murdocca
- Warriors in winter, by Mary Pope Osborne ; illustrated by AG Ford
- Pirates, by Will Osborne and Mary Pope Osborne ; illustrated by Sal Murdocca
- Hurry up, Houdini! ;, High time for heroes, Mary Pope Osborne
- American tall tales, by Mary Pope Osborne ; wood engravings by Michael McCurdy
- Sunlight on the snow leopard, by Mary Pope Osborne ; illustrated by AG Ford
- The knight at dawn, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Hurry up, Houdini!, a Merlin mission, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Camp time in California, by Mary Pope Osborne ; illustrated by AG Ford
- Heroes for all times, a nonfiction companion to Magic tree house #51: high time for heroes, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Sea monsters, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Baseball, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Carlo Molinari
- Danger in the darkest hour, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Warriors, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Isidre Monés
- Soccer on Sunday, Mary Pope Osborne ; illustrated by Sal Mardocca
- Vikings, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Carlo Molinari
- Haunted castle on Hallows Eve, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Ninjas and samurai, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Benjamin Franklin, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Isidre Monés
- Dragons and mythical creatures, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Carlo Molinari
- Survival guide, Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Night of the ninth dragon, a Merlin mission/, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Balto of the Blue Dawn, a Merlin mission, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Space, by Will Osborne and Mary Pope Osborne ; illustrated by Sal Murdocca
- Snakes and other reptiles, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Penguins and Antarctica, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Narwhals and other whales, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Isidre Monés
- Llamas and the Andes, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Isidre Monés
- Hurry up, Houdini!, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Magic tree house, books 5-8 ebook collection, the mystery of the magic spells, by Mary Pope Osborne ; illustrated by Sal Murdocca
- China, land of the emperor's Great Wall, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Carlo Molinari
- Narwhal on a sunny night, by Mary Pope Osborne ; illustrated by AG Ford
- To the future, Ben Franklin!, by Mary Pope Osborne ; illustrated by AG Ford