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Incoming Resources
- Ancient Greece and the Olympics, a nonfiction companion to Hour of the Olympics, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Penguins and Antarctica, a nonfiction companion to Magic Tree House #40 "Eve of the Emperor Penguins", by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Rags and riches, kids in the time of Charles Dickens : a nonfiction companion to A Ghost Tale for Chistmas Time, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- American revolution, a nonfiction companion to Magic Tree House #22 "Revolutionary War on Wednesday", by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- 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
- Sharks and other predators, a nonfiction companion to Magic Tree House #53: Shadow of the Shark, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Carlo Molinari
- Leprechauns and Irish folklore, a nonfiction companion to Leprechaun in Late Winter, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Tsunamis and other natural disasters, a nonfiction companion to Hide tide in Hawaii, by Mary Pope Osborne and Natalie Pope Boyce ; 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
- Sea monsters, a nonfiction companion to Magic Tree House #39 "Dark day in the deep sea", 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
- Llamas and the Andes, a nonfiction companion to Magic Tree House #34: late lunch with llamas.", by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Isidre Monés
- China, land of the emperor's Great Wall : a nonfiction companion to Magic Tree House #14: Day of the Dragon King, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Carlo Molinari
- Ghosts, a nonfiction companion to A good night for ghosts, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Horse heroes, a nonfiction companion to Magic Tree House #49 "Stallion by Starlight", by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Soccer, a nonfiction companion to Magic Tree House #52 "Soccer on Sunday", by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Snakes and other reptiles, a nonfiction companion to "A Crazy Day with Cobras", by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Abraham Lincoln, a nonfiction companion to Magic tree house, #47: Abe Lincoln at last!, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Vikings, a nonfiction companion to Magic Tree House #15: Viking Ships at Sunrise, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Carlo Molinari
- Pilgrims, a nonfiction companion to Magic Tree House #27 "Thanksgiving on Thursday", by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Magic tricks from the tree house, a fun companion to Magic Tree House #50 "Hurry up, Houdini!", by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Dolphins and sharks, a nonfiction companion to Dolphins at daybreak, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Dragons and mythical creatures, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Carlo Molinari
- 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