Primary Sources in U.S. History: The Cold War
Essential Library of World War I: World War I Causes
The Russian Revolution: The Fall of the Tsars and the Rise of Communism
Worldmark Encyclopedia of the States
Technology of the Industrial Revolution
Frontline Families: World War II: Frontline Soldiers and Their Families
Decades of the 20th and 21st Centuries: The 1970s
Essential Library of World War I: Women in World War I
Revolution and Independence in Latin America
Decades of the 20th and 21st Centuries: The 1960s
The Great Migration and the Harlem Renaissance
Crime and Punishment in America: An Encyclopedia of Trends and Controversies in the Justice System