Defining Documents in American History: The 1900s (1900-1909)
Military Technology: Top Secret Clearance: Warplanes of World War II Up Close
Primary Sources in U.S. History: World War II
Essential Library of World War I: World War I Weapons
Frontline Families: World War II: Frontline Soldiers and Their Families
Essential Library of World War I: Women in World War I
Tech in the Trenches: Strategic Inventions of World War I
Resisting the Holocaust: Upstanders, Partisans, and Survivors
The Russian Revolution: The Fall of the Tsars and the Rise of Communism
Essential Library of World War I: Trench Warfare
Essential Library of World War I: World War I Battles
Critical Insights: Holocaust Literature
Tech in the Trenches: Strategic Inventions of World War II