110 books • 17 series
Christopher Columbus (Great Explorers)
Captain Cook (Great Explorers)
Ferdinand Magellan (Great Explorers)
Jacques Cousteau (Great Explorers)
Neil Armstrong (Great Explorers)
Marco Polo (Great Explorers)
Swat (Emergency Workers)
EMT (Emergency Workers)
Hazmat (Emergency Workers)
Firefighter (Emergency Workers)
Search & Rescue (Emergency Workers)
Police (Emergency Workers)
Civil War: Turning Points (Civil War)
Civil War: Early Battles (Civil War)
Civil War: Weapons (Civil War)
Civil War: Leaders and Generals (Civil War)
Civil War: Final Years (Civil War)
Civil War: Slavery (Civil War)
World of Mythology Set 2 (Set) (The World of Mythology)
Freedom and the Future (Hispanic American History)
South Pacific Mythology (The World of Mythology) (World of Mythology (Abdo))
Years of Slavery (African American History) (African-American History (Abdo))
Building a New World (Hispanic American History)
Roots of Humanity (African American History) (African-American History (Abdo))
