World War II: The Definitive Encyclopedia and Document Collection
Primary Sources of the Abolitionist Movement: Harriet Beecher Stowe and Uncle Tom's Cabin
Military Technology: Top Secret Clearance: Warplanes of World War II Up Close
Frontline Families: World War II: Frontline Soldiers and Their Families
Tech in the Trenches: Strategic Inventions of World War I
Frontline Families: The American Revolution: Frontline Soldiers and Their Families
Decades of the 20th and 21st Centuries: The 1990s
Timeline Trackers: Westward Expansion: A Timeline History of the California Gold Rush
Timeline Trackers: Westward Expansion: A Timeline History of the Trail of Tears
Spotlight on Immigration and Migration: Immigration to Colonial America
Frontline Families: World War I: Frontline Soldiers and Their Families
Primary Sources of the Abolitionist Movement: John Brown and Armed Resistance to Slavery
Defining Documents in American History: Civil Rights (1954-2015)