The American Revolution: Documents Decoded
Cryptography: Code Making and Code Breaking: Digital Era Encryption and Decryption
Warriors Around the World: Vikings
Mystery Hunters: Lost Kings and Kingdoms
Warriors Around the World: Mongol Warriors
Women in Science: Marie Curie: Radioactivity Pioneer and the First Woman to Win a Nobel Prize
Inventions That Changed the World: Henry Ford and the Assembly Line
Engineering Wonders: Great Wall of China
Awfully Ancient: Loos, Poos, and Number Twos: A Disgusting Journey Through the Bowels of History!
Mesopotamia and the Rise of Civilization: History, Documents, and Key Questions
Defining Documents in American History: The 1900s (1900-1909)
Totally Gross History: The Totally Gross History of Ancient Rome
Technology of the Industrial Revolution
The Mongol Empire: A Historical Encyclopedia
The Persian Empire: A Historical Encyclopedia
Great Minds of Science Set 2: Charles Darwin: Groundbreaking Naturalist and Evolutionary Theorist
The Ancient World: Extraordinary People in Extraordinary Societies
Inventions That Changed the World: Johannes Gutenberg and the Printing Press