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  Black Gold: The Story of Oil in Our Lives
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  Little Monsters: The Creatures That Live on Us and in Us
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  The Spanish-American War
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  Terror of the Spanish Main: Sir Henry Morgan and His Buccaneers
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  Cowboys, Indians, and Gunfighters: The Story of the Cattle Kingdom
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  The Sea King: Sir Frances Drake and his Times
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  Empires Lost and Won: The Spanish Heritage in the Southwest
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  Plains Warrior: Chief Quanah Parker and the Comanches
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  Virginia’s General: Robert E. Lee and the Civil War
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  Unconditional Surrender: U. S. Grant and the Civil War
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  The Secret Armies: Spies, Counterspies, and Saboteurs in World War II
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  America and Vietnam: The Elephant and the Tiger
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  War Clouds in the West: Indians & Cavalrymen- 1860-1890
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  The Sea Rovers: Pirates, Privateers, and Buccaneers
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  Stalin: Russia’s Man of Steel
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  Mao Tse-Tung and His China
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  Hitler
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  Flesh & Blood so Cheap: The Triangle Fire and Its Legacy
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  Oh, Rats! The Story of Rats and People
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  Theodore Roosevelt and the Rise of Modern America
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  Years of Dust: The Story of the Dust Bowl
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  “Old Hickory”: Andrew Jackson and the American People
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  Commander and Chief: Abraham Lincoln and the Civil War
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  Saving the Buffalo (Scholastic, 2006)
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  Sitting Bull and His World
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  George Washington & the Founding of a Nation
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  Secrets From the Rocks: Dinosaur Hunting with Roy Chapman Andrews
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  Inca & Spaniard: Pizarro and the Conquest of Peru
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  Aztecs and Spaniards: Cortes and the Conquest of Mexico
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  Struggle for a Continent: The French and Indian Wars 1690-1760
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  The War for Independence: The Story of the American Revolution
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  1812: The War Nobody Won
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  The Yanks Are Coming: The United States in the First World War
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  The Airman’s War: World War11 in the Sky
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  Overlord: D-Day and the Invasion of Europe
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  Victory in the Pacific
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  Napoleon and the Napoleonic Wars
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  Dr. Jenner and the Speckled Monster: The Search for the Smallpox Vaccine