Military Technology: Top Secret Clearance: Warplanes of World War II Up Close
Essential Library of World War I: World War I Battles
Defining Documents in American History: The 1900s (1900-1909)
Frontline Families: World War I: Frontline Soldiers and Their Families
The Russian Revolution: The Fall of the Tsars and the Rise of Communism
Essential Library of World War I: World War I Causes
World War II: The Definitive Encyclopedia and Document Collection
Essential Library of World War I: Women in World War I
Tech in the Trenches: Strategic Inventions of World War II
Military Technology: Top Secret Clearance: Tanks of World War II Up Close
Resisting the Holocaust: Upstanders, Partisans, and Survivors
Essential Library of World War I: World War I Aftermath
Critical Insights: Holocaust Literature