- Revolutionary War on Wednesday, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Dog heroes, a nonfiction companion to Magic tree house #46: Dogs in the dead of night, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Osborne, Mary Pope, Magic tree house series, 37
- Late lunch with llamas, by Mary Pope Osborne ; illustrated by AG Ford
- Good morning, gorillas, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Osborne, Mary Pope, Magic tree house series, #38
- Osborne, Mary Pope, Magic tree house, #1
- Polar bears and the Arctic, a nonfiction companion to polar bears past bedtime, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Osborne, Mary Pope, Magic tree house series, 29
- Osborne, Mary Pope, Magic tree house, #37
- Snow leopards and other wild cats, by Mary Pope Osborne and Jenny Laird ; illustrated by Isidre Monés
- Lions at lunchtime, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Dolphins at daybreak, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Stallion by starlight, by Mary Pope Osborne ; 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
- Osborne, Mary Pope, Magic tree house series, 31
- Ghosts, a nonfiction companion to a good night for ghosts, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- High tide in Hawaii, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Magic tree house collection, Mary Pope Osborne, Books 1-8
- Wild West, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Isidre Monés
- A ghost tale for Christmas time, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Tigers at twilight, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Leonardo da Vinci, a nonfiction companion to Monday with a mad genius, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Kate and the beanstalk, by Mary Pope Osborne ; illustrated by Giselle Potter
- Osborne, Mary Pope, Magic tree house, #29-32
- Texas, a nonfiction companion to Magic Tree House #30: Hurricane heroes in Texas, Mary Pope Osborne, Natalie Pope Boyce ; illustrated by Isidre Mones
- Osborne, Mary Pope, Magic tree house, #38
- Sirens and sea monsters, by Mary Pope Osborne ; with artwork by Troy Howell
- Summer of the sea serpent, Mary Pope Osborne ; illustrated by Sal Murdocca
- Osborne, Mary Pope, Magic tree house series, #30
- Osborne, Mary Pope, Magic tree house series, #51
- Osborne, Mary Pope, Magic tree house series, #8
- Osborne, Mary Pope, Magic tree house series, 18
- Mummies in the morning, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Osborne, Mary Pope, Magic tree house series, #12
- Osborne, Mary Pope, Magic tree house, #3
- Magic tree house, Mary Pope Osborne, Books 29-32
- Afternoon on the Amazon, by Mary Pope Osborne ; illustrated by Sal Murdocca
- American tall tales, by Mary Pope Osborne ; wood engravings by Michael McCurdy
- Leprechauns and Irish folklore, a nonfiction companion to Leprechaun in late winter, Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Hurry up, Houdini!, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Earthquake in the early morning, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Osborne, Mary Pope, Magic tree house series, #10
- Merlin missions collection, Mary Pope Osborne, Books 9-16
- World War II, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Carlo Molinari
- Dolphins and sharks, a nonfiction companion to Dolphins at daybreak, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Osborne, Mary Pope, Magic tree house series, #19
- Osborne, Mary Pope, Magic tree house series, #25
- Season of the sandstorms, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Christmas in Camelot, by Mary Pope Osborne ; illustrated by Sal Murdocca