Mary Pope Osbornebooks in chronological order

Dinosaurs Before Dark / Valley of the Dinosaurs

The Knight at Dawn / Castle of Mystery

Mummies in the Morning / Secret of the Pyramid

Pirates Past Noon / Pirates' Treasure!

Night of the Ninjas

Afternoon on the Amazon

Sunset of the Sabertooth / Mammoth to the Rescue

Midnight on the Moon / Moon Mission!

Dolphins at Daybreak

Ghost Town at Sundown / A Wild West Ride

Lions at Lunchtime / Lions on the Loose

Vacation Under the Volcano / Racing with Gladiators

Polar Bears Past Bedtime / Icy Escape!

Day of the Dragon King / Palace of the Dragon King

Viking Ships at Sunrise / Voyage of the Vikings

Hour of the Olympics

Tonight on the Titanic

Buffalo Before Breakfast

Tigers at Twilight

Dingoes at Dinnertime

Civil War on Sunday

Revolutionary War on Wednesday

Twister on Tuesday

Earthquake in the Early Morning

Stage Fright on a Summer Night

Good Morning, Gorillas

Thanksgiving on Thursday

High Tide in Hawaii

A Big Day for Baseball

Hurricane Heroes in Texas

Warriors in Winter

To the Future, Ben Franklin!

Narwhal on a Sunny Night

Late Lunch with Llamas

Camp Time in California

Sunlight on the Snow Leopard

Rhinos at Recess

Time of the Turtle King

Windy Night with Wild Horses

Christmas in Camelot

Haunted Castle on Hallows Eve

Summer of the Sea Serpent

Winter of the Ice Wizard

Carnival at Candlelight

Season of the Sandstorms

Night of the New Magicians

Blizzard of the Blue Moon

Dragon of the Red Dawn

Monday with a Mad Genius

Dark Day in the Deep Sea

Eve of the Emperor Penguin

Moonlight on the Magic Flute

A Good Night for Ghosts

Leprechaun in Late Winter

A Ghost Tale for Christmas Time

A Crazy Day with Cobras

Dogs in the Dead of Night

Abe Lincoln At Last!

A Perfect Time for Pandas

Stallion by Starlight

Hurry Up, Houdini!

High Time for Heroes

Soccer on Sunday

Shadow of the Shark

Balto of the Blue Dawn

Night of the Ninth Dragon

Danger in the Darkest Hour / World at War, 1944

Spider Kane and the Mystery Under the May-Apple

Spider Kane and the Mystery at Jumbo Nightcrawler's

My Brother's Keeper

After the Rain

A Time to Dance

The One-Eyed Giant

The Land of the Dead

Sirens and Sea Monsters

The Gray-Eyed Goddess

Return to Ithaca

The Final Battle

Run, Run, As Fast As You Can

Love Always, Blue

Best Wishes, Joe Brady

Last One Home

The Deadly Power of Medusa

Moonhorse

Jason and the Argonauts (With: Will Osborne)

Molly and the Prince

Haunted Waters

Rocking Horse Christmas

Adaline Falling Star

Kate and the Beanstalk

The Brave Little Seamstress

New York's Bravest

American Tall Tales

Mo to the Rescue

Pandora's Box

A Visit to Sleep's House

Mo and His Friends

Beauty and the Beast

The Life of Jesus in Masterpieces of Art

Sleeping Bobby

Pompeii: Lost & Found

Dinosaurs

Knights and Castles

Mummies and Pyramids

Pirates

Rain Forests

Space

Titanic

Twisters and Other Terrible Storms

Dolphins and Sharks

Ancient Greece and the Olympics

American Revolution

Sabertooths and the Ice Age

Pilgrims

Ancient Rome and Pompeii

Tsunamis and Other Natural Disasters

Polar Bears and the Arctic

Sea Monsters

Penguins and Antarctica

Leonardo da Vinci

Ghosts

Leprechauns and Irish Folklore

Kids in Hard Times

Snakes and Other Reptiles

Dog Heroes

Abraham Lincoln

Pandas and Other Endangered Species

Horse Heroes

Magic Tricks from the Tree House

Heroes for All Times

Soccer

Ninjas and Samurai

China

Sharks and Other Predators

Vikings

Dogsledding and Extreme Sports

Dragons and Mythical Creatures

World War II

Baseball

Wild West

Texas

Warriors

Benjamin Franklin

Narwhals and Other Whales

Llamas and the Andes

Games and Puzzles from the Tree House (With: Natalie Pope Boyce)

My Magic Tree House Journal

Magic Tree House Survival Guide

Animal Games and Puzzles

Magic Tree House Incredible Fact Book

The Story of Christopher Columbus

George Washington

One World, Many Religions

Happy Birthday America

Memories and Life Lessons from the Magic Tree House

When Will This Cruel War Be Over?: The Civil War Diary of Emma Simpson, Gordonsville, Virginia, 1864 (By: Barry Denenberg)

A Journey to the New World: The Diary of Remember Patience Whipple, Mayflower, 1620 (By: Kathryn Lasky)

Winter Of Red Snow: The Revolutionary War Diary Of Abigail Jane Stewart (By: Kristiana Gregory)

I Thought My Soul Would Rise and Fly: The Diary of Patsy, a Freed Girl, Mars Bluff, South Carolina, 1865 (By: Joyce Hansen)

A Picture Of Freedom (By: Patricia McKissack)

Early Sunday Morning: the Pearl Harbor Diary of Amber Billows, Hawaii, 1941 (By: Barry Denenberg)

Dreams in the Golden Country: The Diary of Zipporah Feldman, a Jewish Immigrant Girl, New York City, 1903 (By: Kathryn Lasky)

West to a Land of Plenty: The Diary of Teresa Angelino Viscardi (By: Jim Murphy)

Standing in the Light: The Captive Diary of Catharine Carey Logan, Delaware Valley, Pennsylvania, 1763

A Line in the Sand: The Alamo Diary of Lucinda Lawrence (By: Sherry Garland)

Stationery Pack (By: Patricia McKissack)

Voyage on the Great Titanic: The Diary of Margaret Ann Brady, R.M.S. Titanic 1912 (By: Ellen Emerson White)

The Great Railroad Race (By: Kristiana Gregory)

My Heart is on the Ground (By: Ann Rinaldi)

The Girl Who Chased Away Sorrow: The Diary of Sarah Nita, a Navajo Girl (By: Ann Turner)

A Light in the Storm: The Civil War Diary of Amelia Martin (By: Karen Hesse)

Color Me Dark: The Diary of Nellie Lee Love, the Great Migration North (By: Patricia McKissack)

A Coal Miner's Bride: The Diary of Anetka Kaminska, Lattimer, Pennsylvania, 1896 (By: Susan Campbell Bartoletti)

My Secret War: The World War II Diary of Madeline Beck, Long Island, New York 1941

One Eye Laughing, the Other Weeping: The Diary of Julie Weiss, Vienna, Austria to New York 1938 (By: Barry Denenberg)

Christmas After All: The Great Depression Diary of Minnie Swift, Indianapolis, Indiana 1932 (By: Kathryn Lasky)

Valley of the Moon: The Diary of María Rosalía de Milagros, Sonoma Valley, Alta Valley, California, 1846, (By: Sherry Garland)

My Face to the Wind: The Diary of Sarah Jane Price, a Prairie Teacher, Broken Bow, Nebraska 1881 (By: Jim Murphy)

When Christmas Comes Again: The World War I Diary of Simone Spencer (By: Beth Seidel Levine)

My Secret War : The World War II Diary of Madeline Beck (By: Kathryn Lasky)

A Time for Courage: The Suffragette Diary of Kathleen Bowen, Washington, D.C. 1917 (By: Kathryn Lasky)

Where Have All the Flowers Gone? (By: Ellen Emerson White)

Mirror, Mirror on the Wall: The Diary of Bess Brennan, The Perkins School for the Blind, 1932 (By: Barry Denenberg)

Survival in the Storm: The Dust Bowl Diary of Grace Edwards, Dalhart, Texas 1935 (By: Katelan Janke)

So Far From Home: the Diary of Mary Driscoll, an Irish Mill Girl, Lowell, Massachusetts, 1847 (By: Barry Denenberg)

Love Thy Neighbor: The Tory Diary of Prudence Emerson (By: Ann Turner)

Land of the Buffalo Bones: The Diary of Mary Ann Elizabeth Rodgers, An English Girl in Minnesota (By: Marion Dane Bauer)

All the Stars in the Sky (By: Megan McDonald)

Seeds of Hope: The Gold Rush Diary of Susanna Fairchild, California Territory 1849 (By: Kristiana Gregory)

Look to the Hills: The Diary of Lozette Moreau, a French Slave Girl, New York Colony 1763 (By: Patricia McKissack)

Hear My Sorrow: The Diary of Angela Denoto, a Shirtwaist Worker, New York City 1909 (By: Deborah Hopkinson)

I Walk in Dread: The Diary of Deliverance Trembley, Witness to the Salem Witch Trials, Massachusetts Bay Colony, 1691 (By: Lisa Rowe Fraustino)

The Fences Between Us: The Diary of Piper Davis, Seattle, Washington, 1941 (By: Kirby Larson)

Like the Willow Tree (By: Lois Lowry)

Cannons at Dawn (By: Kristiana Gregory)

With the Might of Angels: The Diary of Dawnie Rae Johnson, Hadley, Virginia, 1954 (By: Andrea Davis Pinkney)

Behind the Masks: The Diary of Angeline Reddy, Bodie, California, 1880 (By: Susan Patron)

Down the Rabbit Hole, Chicago, Illinois, 1871: The Diary of Pringle Rose (By: Susan Campbell Bartoletti)

A City Tossed and Broken: The Diary of Minnie Bonner, San Francisco, California, 1906 (By: Judy Blundell)

Dinosaurs Before Dark

The Knight at Dawn

Mummies in the Morning

Pirates Past Noon

Favorite Greek Myths

Bears, Bears, Bears

The Many Lives of Benjamin Franklin

Mermaid Tales from Around the World

Favorite Norse Myths

When I Was Your Age: Original Stories about Growing Up

Favorite Medieval Tales

The Random House Book of Bible Stories

Fourteen Days: An Unauthorized Gathering