- Dragon of the red dawn, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Dark day in the deep sea, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Pilgrims, a nonfiction companion to Thanksgiving on Thursday, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Hurricane heroes in Texas, by Mary Pope Osborne ; illustrations by AG Ford
- Time of the turtle king, by Mary Pope Osborne ; illustrated by AG Ford
- Dinosaurs before dark, Mary Pope Osborne ; adapted by Jenny Laird ; with art by Kelly & Nichole Matthews
- Abe Lincoln at last!, Mary Pope Osborne ; illustrated by Sal Murdocca
- Magic tricks from the tree house, an activity companion to magic tree house #50: hurry up, Houdini!, Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Magic tree house, by Mary Pope Osborne, Books 40 & 41
- Osborne, Mary Pope, Magic tree house, 23
- High tide in Hawaii, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Osborne, Mary Pope, Magic tree house series, #38
- Magic tree house, Mary Pope Osborne, Books 42 & 43
- Narwhal on a sunny night, by Mary Pope Osborne ; illustrated by AG Ford
- Dinosaurs before dark, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Osborne, Mary Pope, Magic tree house, 21
- Memories and life lessons from the Magic tree house, Mary Pope Osborne ; with illustrations by Sal Murdocca
- Eve of the Emperor penguin, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Hurry up, Houdini!, High time for heroes, Mary Pope Osborne
- Haunted castle on Hallows Eve, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Tsunamis and other natural disasters, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Danger in the darkest hour, Mary Pope Osborne
- Night of the new magicians, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Earthquake in the early morning, Mary Pope Osborne ; illustrated by Sal Murdocca
- Pirates past noon, the graphic novel, adapted by Jenny Laird ; with art by Kelly and Nichole Matthews
- Rhinos at recess, by Mary Pope Osborne ; illustrated by AG Ford
- Lions at lunchtime, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Mummies in the morning, the graphic novel, adapted by Jenny Laird ; with art by Kelly & Nichole Matthews
- Sabertooths and the Ice Age, a nonfiction companion to Sunset of the sabertooth, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Late lunch with llamas, by Mary Pope Osborne ; illustrated by AG Ford
- Vacation under the volcano, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Osborne, Mary Pope, Magic tree house series, 29
- Moonlight on the magic flute, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Snow leopards, and other wild cats, by Mary Pope Osborne and Jenny Laird ; illustrated by Isidre Monés
- Blizzard of the blue moon, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Carnival at candlelight, by Mary Pope Osborne ; illustrated by Sal Murdocca
- High time for heroes, Mary Pope Osborne
- Sunlight on the snow leopard, by Mary Pope Osborne ; illustrated by AG Ford
- Season of the sandstorms, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Hour of the Olympics, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Tigers at twilight, by Mary Pope Osborne ; illustrated by Sal Murdocca
- A good night for ghosts, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Heroes for all times, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Ancient Rome and Pompeii, a nonfiction companion to Vacation under the volcano, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Mummies in the morning, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Night of the Ninjas, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Day of the Dragon King, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Monday with a mad genius, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Twister on Tuesday, by Mary Pope Osborne ; illustrated by Sal Murdocca