- Monday with a mad genius, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Sunset of the Sabertooth, Mary Pope Osborne
- Hour of the Olympics, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Abe Lincoln at last!, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Pirates Past Noon, Mary Pope Osborne
- American revolution, a nonfiction companion to Revolutionary War on Wednesday, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Dolphins at Daybreak, Mary Pope Osborne
- Polar bears past bedtime, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Titanic, a nonfiction companion to Tonight on the Titanic, by Will Osborne and Mary Pope Osborne ; illustrated by Sal Murdocca
- Horse heroes, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Space, by Will Osborne and Mary Pope Osborne ; illustrated by Sal Murdocca
- Dinosaurs Before Dark, Mary Pope Osborne
- Lions at lunchtime, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Polar bears and the Arctic, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Thanksgiving on Thursday, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Snakes and Other Reptiles, Natalie Pope Boyce
- A perfect time for pandas, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Dog Heroes, Natalie Pope Boyce
- Soccer on Sunday, Mary Pope Osborne
- Dark Day in the Deep Sea, Mary Pope Osborne
- Moonlight on the Magic Flute, Mary Pope Osborne
- Mummies and pyramids, a nonfiction companion to Mummies in the morning, by Will Osborne and Mary Pope Osborne ; illustrated by Sal Murdocca
- Lions at Lunchtime, Mary Pope Osborne
- Viking ships at sunrise, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Polar Bears Past Bedtime, Mary Pope Osborne
- Midnight on the Moon, Mary Pope Osborne
- Penguins and Antarctica, a nonfiction companion to Eve of the emperor penguins, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Dolphins and Sharks, Natalie Pope Boyce
- Pirates past noon, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Afternoon on the Amazon, Mary Pope Osborne
- Soccer on Sunday, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Stage fright on a summer night, by Mary Pope Osborne ; Sal Murdocca, illustrator
- Ghost Town at Sundown, Mary Pope Osborne
- Monday with a Mad Genius, Mary Pope Osborne
- Stage Fright on a Summer Night, Mary Pope Osborne
- Shadow of the shark, Mary Pope Osborne ; illustrated by Sal Murdocca
- 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
- Thanksgiving on Thursday, Mary Pope Osborne
- Dinosaurs, by Will Osborne and Mary Pope Osborne ; illustrated by Sal Murdocca
- Knights and castles, a non fiction companion to Magic Tree House #2: The knight at dawn, by Will Osborne and Mary Pope Osborne ; illustrated by Sal Murdocca
- Dingoes at Dinnertime, Mary Pope Osborne
- High time for heroes, Mary Pope Osborne ; 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
- Carnival at candlelight, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Leprechauns and Irish folklore, a nonfiction companion to Leprechaun in late winter, by Mary Pope Osborne and Natalie Pope Boyce ; illustrated by Sal Murdocca
- Revolutionary War on Wednesday, Mary Pope Osborne
- Revolutionary War on Wednesday, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Dolphins at daybreak, by Mary Pope Osborne ; illustrated by Sal Murdocca
- Double trouble in Walla Walla, by Andrew Clements ; illustrated by Sal Murdocca
- Ghost town at sundown, by Mary Pope Osborne ; illustrated by Sal Murdocca