Essential Library of World War I: Medicine on the Battlefield
Resisting the Holocaust: Upstanders, Partisans, and Survivors
World War II: The Definitive Encyclopedia and Document Collection
Essential Library of World War I: World War I Weapons
Primary Sources in U.S. History: World War II
Essential Library of World War I: Trench Warfare
The Russian Revolution: The Fall of the Tsars and the Rise of Communism
Essential Library of World War I: World War I Leaders
World War I: The Essential Reference Guide
Frontline Families: World War I: Frontline Soldiers and Their Families
Essential Library of World War I: Women in World War I
Essential Library of World War I: World War I Battles