- Caddo and Comanche: American Indian Tribes in Texas
- California en el siglo XX
- California en el siglo XX: Read-along ebook
- California in the 20th Century
- California in the 20th Century: Read-along ebook
- California Indians
- California's Complex Water System
- California's Indian Nations
- California's Spanish Missions
- California: Becoming a State
- California: Becoming a State: Read-along ebook
- California: De pueblos a ciudades
- California: De pueblos a ciudades: Read-along ebook
- California: Nace un estado
- California: Nace un estado: Read-along ebook
- California: Towns to Cities
- California: Towns to Cities: Read-along ebook
- Californianos que marcaron la diferencia: Read-along ebook
- Californians Who Made a Difference
- Californians Who Made a Difference: Read-Along eBook
- California’s Complex Water System: Read-along ebook
- California’s Indian Nations: Read-along ebook
- California’s Spanish Missions: Read-along ebook
- Call of the Klondike
- Calvin Graham's World War II Story
- Can You Sing "The Star-Spangled Banner"?
- Canadian Women Now and Then
- Candy Bomber
- Capsized!
- Captain Mac
- Captain Tom Moore
- Castles & Knights
- Catching Fire
- Caterina di Valois
- Catherine de Valois Activity Book
- Catherine the Great: Empress of Russia
- Cause
- Causes of the Revolution
- Cecil Rhodes: The Man Who Expanded an Empire
- Cesar Chavez
- Champlain
- Changes Within Living Memory Pupil Book
- Charlemagne
- Charles Darwin And Evolution
- Charles Stratton: The Man Who Became Tom Thumb
- Charlotta Bass
- Checks and Balances
- Checks and Balances (Enhanced Edition)
- Chicago History for Kids
- Chicas y chicos malos del Lejano Oeste
- Chicas y chicos malos del Mundo Antiguo
- Child of the Civil Rights Movement
- Children of the Dust Bowl: The True Story of the School at Weedpatch Camp
- Children of the Tipi
- Chile
- Chile (Enhanced Edition)
- China: Land of the Emperor's Great Wall
- Christophe Colomb
- Christophe Colomb et l'étonnante découverte
- Christopher Columbus and the Age of Exploration for Kids
- Châteaux et patrimoine. Voyage au cœur de l'histoire avec les timbres
- Citizenship
- Civics (American Government & Symbols)
- Civics (Government Personal / Local)
- Civil Rights Movement
- Civil War and Reconstruction in Florida
- Civil War Battleship: The Monitor
- Civil War Sub: The Mystery of the Hunley
- Clara
- Clara Barton
- Clara Barton: Angel of the Battlefield
- Clara Barton: El ángel del campo de batalla
- Clash of Cultures
- Classical Kids
- Cleopatra Rules!
- Clever Hans
- Close Calls
- Cléopâtre
- Cléopâtre et son royaume d'Égypte
- Coelophysis
- Coisas de índio
- Cold War Leaders
- Coisas de índio
- Cold War Leaders
- Colección biblioteca de Hogwarts
- Colonización y conflictos en el Oeste
- Colonización y conflictos en el Oeste: Read-along eBook
- Communicate! World Leaders Speak
- Communicate!: World Leaders Speak: Read-along ebook
- Communication Past and Present
- Communication Then and Now
- Communities Then and Now
- Complete Homeschool Social Science
- Confucius: Chinese Philosopher
- Conoce a la Señora Libertad
- Conserving an Aircraft
- Controlling Florida: Colonization to Statehood
- Corazon Aquino
- Countries of the World ( Capital - Flag - Currency)
- Cowboys
- Creating the Constitution
- Creatures of Ancient Lands
- Creatures of Ancient Seas
- Creatures of Ancient Skies
- Creatures of Today
- Creepy Chicago
- Crime Time: Australians Behaving Badly
- Crossing a Continent
- Crossing a Continent: Read-along ebook
- Crossing Oceans: Immigrating to California
- Crossing Oceans: Immigrating to California: Read-Along eBook
- Cruzar el océano: La inmigración a California
- Cruzar el océano: La inmigración a California: Read-along ebook
- Cruzar un continente
- Cruzar un continente: Read-along ebook
- Cuando los ángeles cantan (When Angels Sing)
- Cuba
- Cuba (Enhanced Edition)
- Cubs in the Tub
- Cuentos con historia
- Curious About Money
- Curious About the White House