- Aaron Burr: More Than a Villain
- Abandoned Places
- Abe Lincoln
- Abigail Adams
- Abolitionists: What We Need Is Action
- Abraham Lincoln and the American Civil War 1
- Abraham Lincoln and the American Civil War 2
- Accused!
- Acepta que nos hemos enamorado
- Adolf Hitler
- Adventures in Time: Alexander the Great
- Adventures in Time: Cleopatra, Queen of the Nile
- Adventures in Time: The First World War
- Adventures in Time: The Second World War
- Adventures in Time: The Six Wives of Henry VIII
- African Americans in the Military
- After Gandhi
- Air Force
- Al Capone Does My Shirts
- Album of Dogs
- Alcázar de Sevilla
- Alexander Graham Bell
- Alexander Hamilton's New York City
- Alexander Hamilton's New York City: Read-along ebook
- Alexander Hamilton, Revolutionary
- Alexander von Humboldt, un explorador científico en América
- Alice + Freda Forever
- All About Chopsticks
- All about Football
- All About: Awesome Aztecs
- All About: Formidable First Chinese Dynasties
- All About: Impressive Incas
- All About: Formidable First Chinese Dynasties
- All About: Impressive Incas
- All About: Magnificent Mesopotamians
- All About: Mighty Middle Chinese Dynasties
- All About: Mysterious Maya
- All About: Obscure Olmecs
- All About: The Incredible Indus Valley
- All About: Venturesome Vikings
- Als ich noch der Waldbauernbub war
- Amazing Animals, People, Places, and Inventions
- Amazing Muslims Who Changed the World
- Ambushed!
- America Border Culture Dreamer
- America in World War I: A History Just for Kids!
- America in World War II: A History Just for Kids!